ParentWise

2-year sleep regression

Typical age: 2 years. Usually lasts: 1–3 weeks.

Why it happens

Around 2, fears of the dark, a new sibling, starting daycare, potty training or moving to a big-kid bed can all disrupt sleep. Imagination is growing, so nighttime fears become real.

Signs

  • Getting out of bed repeatedly
  • Fears of the dark or monsters
  • Early waking or long bedtime stalling

What helps

  1. Keep toddlers in a cot until closer to 3 if they aren’t climbing out.
  2. Use a dim nightlight and a comfort object.
  3. An “OK to wake” clock helps with early rising.
  4. Avoid big changes (new bed, potty training) at the same time.

Check the wake windows for this age in the sleep schedule builder.

When to call your pediatrician

Call your pediatrician today
  • Fever, ear pulling with a cold, vomiting, or feeding much less
  • Loud snoring or pauses in breathing during sleep
  • No improvement after 6 weeks
Usually OK to watch at home
  • Well and happy by day, feeding and peeing normally

General guidance based on AAP, NHS and CDC advice, not a diagnosis. If your gut says something is wrong, call your pediatrician or nurse line. You never need permission to seek care.

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Questions parents ask

Why is my 2-year-old suddenly scared of the dark?
Imagination develops fast at 2–3. A dim red or amber nightlight and calm reassurance help; avoid scary screen content before bed.

Other sleep regressions