LO is 3 mo and his sleep is terrible. his longest stretch of nighttime sleep has never been more than 3 hours and then he is up every 1 to 2 hours after that. last few days have been even worse and my 4 year old wakes me up at night too. the sleep deprivation is really taking a toll on me. would it really be that bad if i put LO to sleep on his stomach? a friend did this much earlier than three months old and her kids immediately slept better. he has good head control for his age but i know i'm supposed to put him down only on his back. i'm getting desperate. i already swaddle, use white noise, and made a crib nest. should i try puting him down on his tummy?