Hi, dd2 is only 2 weeks old but definitely hates sleeping on her back, even when swaddled. We've been letting her sleep on her side, between 2 rolled up blankets, but they're a bit ineffective, and if she sleeps a longer stretch, she ends up on her front.
I've seen those things that you can place them between so they stay on their sides. Does anyone have one? Any success?
Am wary of buying something that is just a gimmick.