If you put him in before everything is stable make sure you are watching your temps bc you don't want to leave and come back and its way to hot which would cause burns or even death. Just keep an eye and everything should be ok. Do you already have the snake in a box or something and waiting for everything to stabilize or do you have to go get him? If you already have him I would put him in if its warmer in the tank then where he's at.