We have a Tutti Bambini Cozee in our bedroom set up with one side open (strapped to the bed of course). When we go to sleep I put him in the feet to foot position, with his body running along the long side of the crib, but the last two nights whenever he stirs and I wake up he’s moved to be laying horizontally with his body across the short end of the crib! His head is always on the side of the bed. He only just about fits length ways. Is this safe/anything to worry about?!