My 3 1/2 month old DD has just started rolling from front to back and is desperate to roll from her back to her front too. While I'm delighted she's doing this, I'm also a bit worried about it, as she is not good on her tummy and when I give her tummy time, she gets so tired and buries her head (and nose) in the ground. I'm really worried that she'll do this when I put her down to sleep and that she might suffocate. Am I being paranoid or should I put something next to her so she can't roll in her cot? I would love to hear from anyone who has been through this and come out the other side! Advice greatly appreciated!