Congratulations! Now your baby will probably begin to stay awake longer during the day and sleep more at night. Probably — but the range of normal is still very wide.

Your baby’s sleep phases are much the same as your own: drowsiness, REM (rapid eye movement) sleep, light sleep, deep sleep, and very deep sleep. Your baby might start sleeping through the night now — but the definition of “sleeping through the night” at this age is a stretch of only 5 hours! Continue reading →