Sleep regression is when a baby or toddler who was sleeping well suddenly starts waking up more often at night, fighting naps, or having a hard time falling asleep — seemingly out of nowhere. It’s a temporary phase, but it can feel overwhelming for everyone involved.
📆 When Does Sleep Regression Happen?
Sleep regressions commonly happen at predictable ages, often linked to developmental milestones:
| Age | Common Causes |
|---|---|
| 4 months | Major changes in sleep cycles (baby now has lighter, more adult-like sleep patterns) |
| 6 months | Growth spurts, teething, learning to roll/sit |
| 8–10 months | Separation anxiety, crawling or standing |
| 12 months | Walking and language leaps |
| 18 months | Big emotions, asserting independence |
| 2 years | Nap changes, fears, potty training |
Note: Not every baby hits every regression — and timing can vary slightly.
⚠️ What Are the Signs of Sleep Regression?
- More frequent night wakings
- Shorter naps or skipped naps
- Fussiness at bedtime
- Early morning wake-ups
- Baby suddenly resisting sleep routines
- More clinginess or crying at night
These signs can last from a few days to a few weeks.
💡 Why Does Sleep Regression Happen?
Sleep regressions are usually tied to your baby’s growth and brain development. As your little one learns new skills (rolling, crawling, talking), their sleep gets temporarily disrupted. They might wake up to practice or because their brain is extra “busy.”
✅ How to Cope With Sleep Regression
- Stick to your routine. Keep a consistent bedtime routine to help signal it’s time for sleep.
- Offer comfort, but don’t start new habits. Avoid starting things you won’t want to keep — like rocking to sleep or middle-of-the-night feedings if they’ve already dropped them.
- Practice new skills during the day. If your baby is learning to crawl or pull up, give them lots of time to explore during the day.
- Watch for sleepy cues. Sleepy babies are more likely to melt down — try putting them down before they’re overtired.
- Be patient and give yourself grace. It’s not your fault. This is a normal — though exhausting — part of babyhood.
🧘♀️ Remember: It’s Temporary
Sleep regression can be frustrating, but it’s a sign of healthy development. It doesn’t last forever, and with consistency and support, your baby will return to better sleep.