The exhausting 4 month sleep regression is when your baby wakes very frequently at night and/or takes short naps. Regressions at other ages, including 8 months, 11 months, 18 months, and 2 years old, are temporary. The 4-month sleep regression is a permanent change to how your baby sleeps. Learn more about this exhausting time period and how to manage it with this guide. If after you read this you need individual help, please consider contacting a baby sleep consultant. The 4 Month Sleep