Beck, Matilda would only sleep on her belly. When we had the MCHN over to help with settling, she was only able to get MAtilda to sleep on her belly & said that there wasn't much we could do when Matilda was 8 weeks. At that time we co-slept and she slept well on her side so we didn't worry too much. When she was 10 weeks and we went to Riverton they could only get her to sleep on her belly as well. So at that time she was in a growbag and slept both day & night sleeps on her belly and even rolled as well. HTH!

eta... she now sleeps on her back, but is a very active sleeper & you could find her on her back, side or belly at anytime.