Please ladies I need help!! My 3.5 month old son will only nap for 30 minutes at a time. And he can only stay awake for 90 minutes in between naps otherwise he gets so overtired and cranky. He naps swaddled in his crib in a dark room with a sound machine. Sometimes he takes 5 naps a day!!! I'm constantly putting him down and picking him up, I get NO break and NO time to get anything done. At night he sleeps from 7pm-6am, feeding once. Please help! I need his naps to be longer. I know this is normal for some babies but I'm at my wits end. Can anybody suggest anything that worked for them??