hiya,

my dd has preferred his belly since he was 3-4mths old. I was worried at first, but he slept so much better on his tummy, i liked it! I also new he had alot of strength in his neck and back etc. I had a little lamb sleep thing, it has raised sides attached to some fabric that the baby sleeps on, each piece has velcro and it supports each side of the bub without moving or him being able to roll over it. There is heaps of them out there and it was about $20.00. but i would think at 8mths you should be ok!