My 4 months old temp was 35.4 when he was asleep. He was in a vest, baby brow and blanket over him. The room was 23.5 degrees.
I put him on my chest for over an hour wrapped in 3 blankets and his temp still didn't rose his body felt cold. Soon as I wake him up 15 mins later his temp regulates again. I'm so scared of sleeping and anything happen ring to him for being cold.