Baby Sleep Regression Timeline
Understanding when sleep regressions occur helps parents prepare and set realistic expectations. This complete timeline covers all 7 major sleep regressions from infancy through toddlerhood.
Complete Sleep Regression Timeline
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4-Month Regression (3-5 months)
The most significant regression, marking permanent changes to sleep cycles. Lasts 2-6 weeks but sleep patterns permanently change.
6-Month Regression (5-7 months)
Often tied to physical milestones like sitting and crawling. Lasts 2-4 weeks.
8-Month Regression (7-10 months)
Coincides with major motor milestones and peak separation anxiety. Lasts 2-4 weeks.
12-Month Regression (11-13 months)
Often involves walking, talking, and nap transitions. Lasts 2-4 weeks.
18-Month Regression (17-19 months)
One of the most challenging, involving language explosion and boundary testing. Lasts 2-6 weeks.
2-Year Regression (23-25 months)
Often involves imagination development, fears, and major transitions. Lasts 2-4 weeks.
2.5-Year Regression (28-30 months)
Some toddlers experience another regression related to independence and nap transitions. Lasts 2-4 weeks.
Key Takeaways
- Sleep regressions are temporary disruptions in sleep patterns
- They occur during periods of rapid development
- Understanding timing helps parents prepare and set realistic expectations
- Each regression has unique characteristics and management strategies