Sleep Regressions by Age: 4, 6, 8–10, 12, 18 & 24 Months (What’s Normal + What Helps)

Sleep ‘regressions’ are usually periods of disrupted sleep tied to development, schedule shifts, or new skills. They’re common—and with the right plan, they don’t have to derail sleep long-term.

4 months

• Sleep cycles mature; babies wake more fully between cycles.

• Focus: consistent routine + age-appropriate schedule + gentle settling plan.

6 months

• Rolling/sitting, increased awareness, feeding changes.

• Focus: schedule balance, practice skills in the day, consistent responses at night.

8–10 months

• Separation anxiety + mobility (crawling/standing).

• Focus: connection before bed, predictable routine, gradual independence if needed.

12 months

• Walking, language bursts, nap changes.

• Focus: protect naps, avoid overtiredness, keep boundaries calm and consistent.

18 months

• Big emotions, boundary testing, separation anxiety.

• Focus: toddler-friendly routine, clear scripts, consistent follow-through.

24 months

• Imagination, fears, language, sleep resistance.

• Focus: reassurance + boundaries, comfort objects, and a predictable bedtime plan.

When to get support

If disrupted sleep lasts longer than ~2 weeks, or you’re seeing escalating bedtime battles and frequent wakes, it’s often a sign the schedule or settling approach needs an update.

Next step

For babies and toddlers (4 months to 5 years), Full Bloom Support is designed for regressions and ongoing sleep challenges.

Start with a Hush And Bloom Support Call (15-min) consultation to choose the right next step.