My DD who is 8 wks old won't sleep on her back. She never has like this, even when swaddled. She will nap on her side, but this will only last about 1 hour. We have tried wedges and they haven't helped. She will sleep for hours on her tummy but I won't put her in her crib this way (if DH or I are laying on the couch watching TV I will let her lay on our chest). She started sleeping through the night 2 wks ago but she is sleeping in her car seat.
How can I get her to sleep on her back in her crib?