I am having real trouble getting my 11 week old baby to settle in her crib. She will fall asleep soundly on me or her daddy but as soon as we but her down in her crib she wakes up and cries! I've tried putting her down when she is drowsy but she just cries instead of drifting off! The only way she seems to fall asleep is on us! Any advise on how to get her settled in her crib?