Sleep Regressions: What to Expect in the First Two Years

When you think you've finally hit your stride with a good sleep rhythm, your baby starts waking up all night again. Sound familiar? You're probably in the thick of a sleep regression. It's a frustrating, exhausting time, but here's the good news: sleep regressions are completely normal and a sign that your baby is growing and learning at a rapid pace.

Let's break down when they usually show up, why they happen, and some gentle ways to get back on track.

What Exactly Is a Sleep Regression?

A sleep regression is simply a period when a baby or toddler who was sleeping well suddenly struggles. They might wake up more often, fight naps, or take longer to settle down at night. These changes almost always happen alongside major developmental leaps, like a growth spurt or learning a new skill.

Think of it this way: their brain and body are working overtime, and sleep is temporarily disrupted while they adjust to all the new things they're doing.

Common Sleep Regressions by Age

• 4 Months: This is the most famous one. Around this age, your baby's sleep cycles mature, meaning they start waking more fully between cycles. Many babies begin to need more help falling back asleep.

• 6 Months: Learning new tricks like rolling and sitting, plus starting solid foods, can all mess with their sleep. Growth spurts can also mean they need more night feedings.

• 8–10 Months: Separation anxiety often peaks here, and babies are on the move—crawling or pulling themselves up. They might wake up more often because they want comfort and a little extra connection.

• 12 Months (1 Year): Many babies begin transitioning from two naps to one, which can disrupt their overall sleep schedule. Taking first steps or saying first words can also bring extra excitement that spills over into the night.

• 18 Months: Toddlers are all about independence. Separation anxiety often rears its head again, and you'll likely see some serious bedtime resistance.

• 24 Months (2 Years): Around two, toddlers' imaginations and language skills are exploding. This can lead to new fears, nightmares, and big emotions that show up at night.

Why Do Sleep Regressions Happen?

The short answer is that sleep regressions happen because your child is learning, growing, and connecting with the world in new ways.

Here are the biggest culprits:

• Developmental changes (rolling, crawling, walking, talking)

• Growth spurts that make them hungrier

• Separation anxiety and other significant emotional shifts

• Shifting nap schedules or dropping a nap altogether

How to Get Back on Track

Keep your bedtime routine rock solid. Consistency is key. A familiar routine—like bath, pajamas, story, and snuggles—provides comfort and predictability when everything else feels chaotic.

• Offer comfort without creating new habits. It's okay to reassure your baby, but try not to start a new routine you won't want to continue long-term (like rocking them back to sleep every time they wake up).

• Let them practice new skills during the day. Babies often want to "practice" their latest tricks, like rolling or standing, at night. Giving them plenty of time to do it during the day can help tire them out.

• Pay attention to their cues. An overtired baby or toddler will fight sleep even harder. Watch for yawns, eye rubbing, and other signs that they're ready for bed.

• Adjust naps as needed. Some regressions, like the one at 12 months, are really about a nap transition. Be mindful of their wake windows and nap lengths to see if they need an adjustment.

• Take care of yourself. These periods are tough. Ask for help, rest when you can, and remind yourself that this is just a phase. It will pass.

When to Reach Out for Help

Most sleep regressions only last one to three weeks. If your child's sleep struggles continue longer, or if you're worried about their feeding, growth, or overall health, it's a good idea to talk to your pediatrician. You can also contact our certified sleep consultant for a personalized plan.

Sleep regressions can be exhausting, but they're also a normal part of childhood. Every time your little one's sleep goes off track, it's usually because they're learning something amazing. Stay consistent, offer comfort, and know that better sleep is just around the corner.