Sleep Regressions: What They Are, When They Happen, and What to Do

Is your baby suddenly waking more at night? Learn what sleep regressions are, when they happen, and how to handle them calmly and effectively.

Just when you think sleep is improving… everything falls apart.

Your baby starts waking every hour. Naps shorten. Bedtime becomes a battle. You assume you’ve done something wrong.

You haven’t.

What you’re likely experiencing is a sleep regression — a temporary disruption linked to development.

What Is a Sleep Regression?

A baby sleep regression is a period when a child who was sleeping relatively well suddenly begins:

• Waking more frequently at night
• Taking shorter naps
• Resisting bedtime
• Needing more support to fall asleep

It’s usually tied to brain development, new skills, growth spurts, or changes in sleep cycles.

When Do Sleep Regressions Happen?

While every baby is different, the most common ages are:

4 Months

This is the big one. Your baby’s sleep cycles mature and start resembling adult sleep. Light sleep phases increase — meaning more wake-ups.

8-10 Months

Often linked to crawling, pulling to stand, and separation anxiety.

12 Months

Walking, language bursts, and nap transitions can temporarily disrupt sleep.

18 Months (Toddler Regression)

Independence, boundary testing, and big emotions show up here.

How Long Do Sleep Regressions Last?

Most last 2–6 weeks, depending on how consistently you respond.

This is where many families unintentionally create new sleep habits that are hard to reverse later.

What To Do During a Sleep Regression

1. Keep Your Routine Consistent

Now is not the time to reinvent everything. Familiar bedtime steps provide security.

2. Check Awake Windows

Overtiredness makes regressions worse.

3. Pause Before Responding

Some wake-ups are brief sleep cycle transitions. Give your baby a moment to resettle.

4. Avoid Adding Long-Term Habits You Don’t Want

Extra rocking or feeding every hour may feel necessary — but try to stay measured and calm.

What NOT To Do

• Don’t panic and assume sleep is permanently broken
• Don’t immediately drop naps
• Don’t make multiple changes at once

Sleep regressions are temporary. Over-correcting often prolongs them.

The Reassuring Truth

Sleep regressions are actually signs of growth.

Your baby isn’t “going backward.” Their brain is leveling up.

With calm, steady responses and predictable routines, sleep settles again.

Ready for More Rest?

If you’re in the middle of a regression and feeling exhausted, you don’t have to figure it out alone.

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