My little boy is 15 months old, he’s slept on his front for as long as I can remember. (As soon as he could put himself there). It’s getting a bit cooler now but he was too hot when I used a 0.5 tog sleeping bag a couple of nights ago. He seems to be perfect temp now in long pyjamas with a cellular blanket over him but it’s not tucked in because he sleeps right at the top of his cot with his head touching the top (again that’s where he puts himself). Is it safe to leave the blanket on him like that all night?