my lo will not sleep longer then 30 min. i tried wake 2 sleep multiple times, and all that gets me is 45 min nap. I have tried extending her A to 2 hours instead of 1.30 min but with no luck. i do not what else to do, i can't get anything done becaue she needs a nap every hr and a half and then only naps for a half hr! even bby bedtime, she wakes after about a half hr and is on and off for about 2 hours!