Surviving Sleep Regressions: Why They Happen and How to Get Through Them

Just when you thought you’d finally figured out your baby’s sleep, they suddenly start waking frequently through the night and it feels like you’re back in the newborn stage. The good news? This isn’t a setback or a reflection of anything you’ve done wrong. Sleep regressions are a normal, healthy, and temporary part of your baby’s development.

Below, I’ll explain what sleep regressions are, when they most commonly occur, what causes them and how to support your little one (and yourself) through them.

What Is a Sleep Regression?

A sleep regression is a period of time when a baby or toddler’s sleep suddenly worsens. You might notice your little one fight naps, having a harder time falling asleep, or waking more frequently at night. During this time, your baby is learning new skills and it’s common for them to want to start practicing those skills in their crib when they should be sleeping.

What Causes Them?

☁︎ Developmental milestones

☁︎ Growth spurts

☁︎ Schedule changes

☁︎ Life changes

☁︎ Separation anxiety

Common Ages for Sleep Regressions

Every baby develops on their own timeline, so not all children experience sleep regressions at the exact same ages. These phases often align with major developmental milestones, when your little one’s brain and body are working hard to master new skills.

☁︎ 4 months: Sleep cycles mature, leading to lighter, more adult-like sleep patterns.

☁︎ 6 months: Many babies begin sitting and developing early separation awareness.

☁︎ 8–9 months: Increased mobility (crawling or pulling to stand) can disrupt rest.

☁︎ 12 months: Standing, cruising, and walking.

☁︎ 18 months: Newfound independence and separation anxiety.

☁︎ 24 months: Big emotions and boundary testing.

How Long Do Sleep Regressions Last?

Thankfully, sleep regressions are temporary. They usually last anywhere from two to four weeks, though the duration can vary depending on your baby’s age, temperament, and how consistent their sleep routines remain. The stronger your baby’s sleep foundation before the regression begins, the easier it usually is for things to get back on track.

How Can I Help My Baby During a Regression?

It can feel like six weeks is an eternity when you’re in the thick of it, but the good news is you can sleep train during a regression. In fact, gentle sleep training is often how you get through it. Helping your baby learn to fall asleep independently can make it easier for them to adjust to these developmental changes.

Here are a few ways you can support your little one through a regression and lay the foundation for better sleep:

☁︎ Stay consistent with routines and expectations.

☁︎ Maintain the sleep environment (dark room, sound machine, same bedtime).

☁︎ Offer extra comfort when needed.

☁︎ Avoid starting new sleep habits you’ll later need to undo.

☁︎ Watch wake windows and nap timing to prevent under/overtiredness.

☁︎ Encourage practicing new skills during the day.

When to Seek Help

Most sleep regressions resolve on their own with time and consistency, but sometimes a little extra support can make all the difference. If your baby’s sleep hasn’t improved after several weeks, or you’re feeling exhausted and unsure how to move forward, it may be time to reach out for help.

Sleep regressions can feel overwhelming, but remember that they’re temporary and a positive sign that your baby is growing and thriving. To make things easier, I’ve created The Sleep Regression Survival Guide, packed with practical, easy-to-follow advice to help you understand and handle sleep regressions.

If you’d like more personalized support, you’re also welcome to book a complimentary phone consultation with me. Together, we’ll uncover what’s disrupting your little one’s sleep and create a plan that helps everyone get the rest they need.