Mybrat, when it comes to cot deaths, it seems that there are different opinions.
I think the most common suggestion from Peads is to avoid a baby sleeping on his tummy. I was advised by my clinic sister to let her sleep on her side or back. I used one of those "support" sponges that keeps baby in one position. I think that certain people are of the opinion that those things are dangerous.
I think there are various opinions on the subject, but I think most people agree to avoid sleeping on the tummy.
Maybe other moms can add to this discussion.