The 8-month sleep regression

You’re on all fours, crawling after your baby into the kitchen—a fresh diaper in one hand and baby pajamas in the other. It’s bedtime, but your little one has very different plans. They scurry away, giggling, their eyes sparkling with pride as if to say, Catch me if you can! You love watching them explore, but wow—this new mobility has its downsides.

Yawning, you glance at the clock. Bedtime should have started an hour ago. But instead, you’ve been on a wild goose chase, trying to wrangle your tiny adventurer into their pajamas. And your once-reliable bedtime routine? Gone.

You switch tactics, creeping closer with a playful grin. “Got you,” you whisper as you scoop them up—only for the giggles to turn into full-blown protests. Not again.

Just last week, rocking your baby to sleep was easy. Now, everything’s changed, and you’re running on fumes.

Your baby suddenly fights sleep, wakes up constantly, seems extra fussy, and clings to you more than usual? If this sounds familiar, they’re likely in the middle of the 8-month sleep regression—a phase triggered by major developmental leaps.

Crawling, babbling, exploring—it’s a lot. And all that learning? It can seriously mess with sleep.

Not sure what’s happening? If you’ve never heard of sleep regression, don’t worry—you’re in the right place. And if you already survived the 4-month sleep regression, you’ve got some experience to build on!

What to expect

If you’re feeling worried, frustrated, and completely exhausted because your baby’s sleep has taken a turn for the worse—you’re not alone.

This phase is tough, but don’t worry—we’ve got your back! With a little understanding, love, and patience, you’ll get through this together.

What is the 8-month sleep regression?

Simply put, regression means taking a step back. A sleep regression is a temporary phase where your baby’s sleep patterns suddenly change, leading to more night wakings, trouble falling asleep, and extra irritability. If your baby was sleeping well before, you’ve likely noticed these new challenges creeping in.

You might be thinking, Not again!—especially if you’ve already survived the 4-month sleep regression. But here’s the good news: just like before, the 8-month sleep regression is temporary. It doesn’t mean your baby will always struggle with sleep, and it certainly doesn’t mean they’re taking a step backward in their development. In fact, it’s quite the opposite—this is a sign of growth!

Even though your baby’s sleep might seem unpredictable again, the 8-month sleep regression is usually a sign of developmental progress. Your little one is making big cognitive and physical strides, learning new skills, and becoming more independent. Other factors, like separation anxiety or changing sleep needs, can also play a role—but more on that later.

One thing is certain: the reasons behind the 8-month sleep regression vary, but so does your baby’s development. What’s just as certain? Sleep regressions are completely normal.They’re part of your baby’s journey, a sign of exciting milestones ahead.

So, “Keep Calm and Carry On.” You’re doing great!

Feeling frazzled by the 8-month sleep regression? If sleepless nights are wearing you down, Happy Baby can help. Learn more about your baby’s evolving sleep patterns and support them with a daily, age-appropriate sleep schedule designed just for their needs.

At what age does the 8 month sleep regression occur?

Sleep regressions are a hot topic for many parents—whether it’s the 4-month, 8-month, or 12-month sleep regression, they all tend to shake things up. Just like with other regressions, there’s no exact start date. The timing depends on your baby’s unique development, but there’s a general window when the 8-month sleep regression typically hits.

For most babies, this phase occurs sometime between 7 and 10 months. Some little ones experience it earlier, while others may not show signs until closer to 10 months. Every baby is different, but one thing is certain—this is just a phase, and it will pass!

Causes: What’s behind the 8 month sleep regression?

Neh. Auw. Neh. Auw.—your baby is crying, and just like that, you’re wide awake. Again. Groggily, you get up—for the third, fourth, maybe even fifth time tonight. Who’s even counting anymore? You scoop your baby up and hold them close, while the nighttime guessing game begins: Are they hungry? Teething? Too hot? Too cold? What changed?

Just yesterday, everything was fine, and now it’s chaos again. If this sounds familiar, you’re in good company. Many parents find themselves confused, exhausted, and desperate when their baby’s sleep suddenly goes off track.

Understanding why your baby is struggling with sleep during this phase can help you respond to their needs with patience and confidence. Here are some of the most common reasons behind the 8-month sleep regression:

Here are some reasons that can lead to a sleep regression in babies between 7 and 10 months old:

New physical skills: Sitting, crawling, standing—your baby is constantly on the move. And guess what? They want to practice these exciting new skills all the time, even in their sleep! Unfortunately, this often leads to trouble settling down or frequent night wakings.

Language development: Babbling, squealing, and making all sorts of new sounds—your baby is working hard to get your attention. Learning to form new sounds and maybe even understanding their first words is thrilling, but it can also disrupt sleep.

Changing sleep cycles: Between 7 and 10 months, many babies experience a shift in sleep needs. They tend to sleep less during the day and more at night, often transitioning from three naps to two. While this is a normal adjustment, it can cause overtiredness, leading to difficulty falling and staying asleep—a vicious cycle.

Separation anxiety: Suddenly, your once-independent baby needs you more than ever. Separation anxiety typically kicks in around 6 months and can last into the first year. Babies going through this phase often struggle to fall asleep and stay asleep without Mom or Dad nearby.

Teething and growing pains: Cutting those first teeth? Ouch. Teething can be uncomfortable or even painful, causing restless nights. And let’s not forget growing pains, which can also lead to frequent night wakings and disrupted sleep.

The good news: This phase won’t last forever. Your baby is going through huge developmental leaps, and while sleep may be rough for a little while, it’s all part of their incredible growth!

Signs: How do I recognize the 8-month sleep regression?

Wondering how to tell if your baby is going through the 8-month sleep regression? That’s a great question! If your baby’s sleep habits suddenly change, and you start noticing these signs, chances are, you’re right in the middle of it.

Common signs of an 8-month sleep regression include:

  • Trouble falling asleep—even when they seem tired. 
  • Bedtime routines drag on much longer than usual.
  • Frequent night wakings—sometimes every 1-2 hours.
  • Short naps (20-45 minutes) or outright nap refusal.
  • Irritatable and moody due to lack of sleep.
  • Longer wake windows, now with only 2-3 naps per day.
  • Practicing new skills—sitting, crawling, or standing nonstop. 
  • Increased need for closeness—wanting to nurse or have a bottle more often to fall asleep or stay asleep.

What's next?

Feeling frustrated and exhausted because the 8-month sleep regression is keeping you up at night? You’re not alone! If you want to better understand your baby’s evolving sleep patterns and support them through this phase, Happy Baby creates a customized daily sleep schedule tailored to your child’s age and needs—helping you both get more rest!

Difference between teething or sleep regression?

Sleep regressions are often linked to developmental leaps. If your baby is suddenly struggling with sleep while also making big cognitive, motor, or emotional progress, it’s likely a sleep regression rather than teething.

How to tell the difference:

Sleep regression tends to come on suddenly and can last up to six weeks before your baby’s sleep stabilizes. ✔ Teething, on the other hand, usually follows a predictable cycle and lasts about eight days per tooth.

Still unsure? If your baby seems especially uncomfortable, it’s always best to check in with your pediatrician or healthcare provider to rule out any other causes like illness or discomfort.

How to manage the 8 month sleep regression

How long does the 8-month sleep regression last?

The 8-month sleep regression typically lasts between 2 to 6 weeks. Your baby’s sleep often improves once they adjust to longer wake windows and learn to make it to bedtime without becoming overtired. By the time babies reach 10 months, most have moved past this phase and settled into a more predictable sleep routine.

Tips: How to support your baby

Sleep is essential for your baby’s growth, well-being, and development. That’s why making sure both you and your baby get enough rest is so important. As a parent, you know your baby best, and it’s natural to want to support them in the best way possible during this challenging phase.

Here are some practical tips to help you and your baby navigate the 8-month sleep regression:

  • Watch for early sleep cues—yawning, rubbing their eyes, or becoming irritable.
  • Put your baby to bed early—ideally as soon as you notice signs of fatigue.
  • Encourage a calming bedtime routine—read a story, listen to soft music, or engage in other soothing activities
  • Create a sleep-friendly environment—keep the room dark, quiet, and comfortable to promote relaxation. 
  • Reduce stimulation before bedtime—dim the lights and limit excitement before sleep.
  • Give your baby plenty of time during the day to practice their new skills—like crawling or pulling up—so they’re less likely to practice in bed. 
  • Pay attention to their needs—are they hungry, overtired, or just needing comfort? Adjust your approach accordingly. 
  • Be patient and kind—to your baby and yourself. This phase won’t last forever, and you’re doing a great job!

How to survive the 8-month sleep regression?

Let’s be real—the 8-month sleep regression can be exhausting for the entire family. But understanding what’s behind it can help you navigate this phase with confidence and make it a little easier for both you and your baby.

  • N - Normal: The 8-month sleep regression is completely normal and a natural part of your baby’s development. 
  • U - Understanding: Baby development is like a rollercoaster—full of ups and downs, and rarely a straight line. 
  • C - Community: You’re not alone! Connect with other parents who are going through the same thing for support. 
  • R - Routine: Babies thrive on consistency—a steady bedtime routine provides security and predictability
  • P - Progress: A sleep regression isn’t a setback—it’s actually a sign of progress and growth.
  • TLC - Self-Care: Take some time for yourself! Rest, recharge, and don’t forget—you matter too.

Hang in there! This phase won’t last forever, and with patience, love, and a little extra support, you and your baby will get through it together.

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Short & Sweet

The 8-month sleep regression typically occurs between 7 and 10 months and is a normal part of development. During this phase, your baby’s sleep may suddenly change, leading to trouble falling asleep, frequent night wakings, and shorter naps. These disruptions are often linked to developmental leaps, as babies work on mastering new motor skills like sitting, crawling, and standing. At the same time, cognitive and emotional growth can trigger separation anxiety and increased awareness, making it harder for them to settle. Teething can also add to the sleep struggles. The good news? This phase is temporary—it usually lasts between 2 to 6 weeks, after which your baby’s sleep should stabilize.

Are you unsure whether your baby has sleep regression and would like to understand your baby's sleep patterns? With Happy Baby, you can record your baby's sleep and create an individual sleep plan that helps you through the difficult phases.

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FAQ - Everything else you should know

After the 8-month sleep regression: What’s next?

Is there a 7-, 9-, or 10-month sleep regression?

Do all babies go through an 8-month sleep regression?

My 8-month-old baby has never had a sleep regression. Is that normal?

Why is my baby so restless before bedtime?

What’s the difference between the 8-month and 9-month sleep regression?

Are naps affected by the 8-month sleep regression?

Sources:

  1. Dotzauer, D. (2021). Babyschlaf. Fundiertes Wissen und konkrete Handlungsvorschläge aus der Beratungspraxis (1. Auflage). Frankfurt am Main: Mabuse-Verlag
  2. Jenni, O.G. (2009). Säuglingsschreien und Schlaf-Wach-Regulation. Monatsschrift Kinderheilkunde, 157(6), 551–557. doi.org/10.1007/s00112-008-1891-8
  3. Von Hetty van de Rijt, Frans X. Plooij, Xaviera Plooij (2019). Oje, ich wachse!: Von den 10 "Sprüngen" in der mentalen Entwicklung Ihres Kindes während der ersten 20 Monate und wie Sie damit umgehen können. Mosaik