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2 year sleep regression: signs, causes and what helps

One more book, one more drink, one more hug. Around age 2 many toddlers discover that bedtime can be negotiated, and some develop new fears of the dark.

By the Swaddle team · Reviewed October 25, 2026

Usual age

23-26 months

Often lasts

Weeks

Is it a problem?

Normal

Signs of the 2 year sleep regression

  • Bedtime stalling and requests
  • New fears (the dark, monsters)
  • Climbing out of the crib
  • Night wakings or early rising

Why it happens

Two year olds have a lot going on: rapid language growth, a stronger sense of self, imagination (which brings new fears), and often big life changes like a new sibling, potty training or a move to a big bed. Each can unsettle sleep for a while.

What helps

  1. Make "one more" part of the routine. A last hug and a sip of water, built in, so it is not a negotiation.
  2. Use a dim, warm night light if your toddler is scared of the dark.
  3. Do not rush the big bed. The AAP suggests moving to a bed once a child is about 35 inches (89 cm) tall or can climb out.
  4. Space out big changes where you can.
  5. Protect the nap, or offer quiet time and an earlier bedtime on no-nap days.

How long does it last?

Usually a few weeks. Consistency is what shortens it.

When to call your pediatrician

A sleep regression is a normal phase. Call your pediatrician if poor sleep comes with fever, breathing that seems hard or noisy, snoring with pauses, vomiting, a rash, ear pulling with fussiness, fewer wet diapers or poor feeding, or if your baby just seems unwell or unlike themselves. Trust your instincts.

Want the whole day mapped out? See the 2 year old sleep schedule.

Questions parents ask

Why is my 2 year old suddenly fighting sleep?

New independence, imagination and fears, and big life changes are common reasons. Too much or too late a nap can also push bedtime later.

Should a 2 year old still nap?

Yes, most do. Children usually stop napping between 3 and 4 years old.

How long does the 2 year sleep regression last?

Often 2 to 6 weeks, longer if it coincides with a big change like a new sibling.

Sources

  1. Paruthi S, et al. Recommended amount of sleep for pediatric populations: AASM consensus statement. J Clin Sleep Med 2016
  2. Galland BC, et al. Normal sleep patterns in infants and children: a systematic review. Sleep Med Rev 2012
  3. American Academy of Pediatrics: Getting Your Baby to Sleep (healthychildren.org)
  4. American Academy of Pediatrics: Teething: 4 to 7 Months (healthychildren.org)

This page is general information from the sources above, written by the Swaddle team and last reviewed October 25, 2026. It is not medical advice and it is not a substitute for your pediatrician. Every baby is different. If something feels wrong, call your doctor. In an emergency, call 911 (US) or your local emergency number. How we write these pages.

Keep reading

2 year old sleep schedule

Wake windows, naps and a sample day at 2 years.

Wake window calculator

Enter their age and when they woke up. See when the next nap is likely.

4 month sleep regression

Sleep matures into adult-like cycles. More night wakings and 30-45 minute naps.

8 month sleep regression

Crawling, pulling up and separation anxiety collide. Often with the 3 to 2 nap switch.