I feel unbelievably lucky - my LO has always (since 1 week old) gone to sleep at 7/7:30 each night. He used to sleep a couple hours as a newborn, then was up to sleeping 4/5 hours until last week (3.5 months old). Now he sleeps as late as 4 am (8.5 hrs straight). I'm curious how other 3 or 4 month olds sleep, or other newborns even. What is/was your experience with your baby?