Sorry, I will add some more, I was a little distracted.
I always put Kai right in the middle of the cot on his back but somehow he always manages to turn around. This time he was facing the wall but on his tummy. It was the first time I saw this. I know lots of babies do this but this has always been one of those things that worried me. For me it looks a lot easier to roll from tummy to back than back to tummy so I am hoping that because he is strong enough to do so CD isn't much of a factor.
Also I am worried about him banging his head on the cot, I have bumper pads but aren't using them. I wonder if there is an alternative?