I have never believed in using wedges or a chock to stop them rolling - sorry. It is a natural progression and in my experience with my kids and friends' kids, they all all go through this. They need to learn how to roll.

At this time however, I put my DDs into sleeping bags. They couldn't get their legs and hips around to roll over.....for a little while anyway......and it gave me the peace of mind that they were sleeping soundly. I made sure that during the day I encourged tummy time and rolling though so that they learnt how to roll back onto their backs, and strengthen their necks so that if she did roll she could lift her head.

They eventually do roll in a bag, but it can ease you troubles settling in the short term. They learn to move in it quite well, in fact my 1yo walks in hers now, but when she was learning to roll, it just meant that she didn't wake herself up

I am a big rap for the sleeping bag (esp in the colder months) coz then I don't stress that they've kicked the covers off. I know that htey are always appropriately covered.