Posted by rstlessmom on February 22, 2007 at 12:48:14:My son is a big boy about 18.5 lbs and is 4 months old he will fall asleep around 10:00pm and wake up around 1:30am or 2 he does take naps about 3 during the day average 30 mins each nap help is there anyway to get him to sleep longer because at 1:30 he doesnt want to go back to sleep