About a week and a half ago, our 9 week old stopped napping. She was previously a good napper but now she won't nap unless she is in our arms. Once we put her down, she pops up anywhere from 15-30 mins later super cranky and also has her witching hour from anout 4-6ish. She is a good night sleeper but we can't get the nap thing straight. We've tried a nap routine, swings, slings, bouncy seat, nappy nanny, crib, etc. our daughter is healthy, has a good appetite and very alert (a busy body which could be part of the problem..) Any thoughts or suggestions for what has worked for other parents out there?