My python has been going through a long, maybe 2 or 3 week shedding stage. There are some parts falling off but its mostly all still on. First of all, is that normal? Second, his skin looks like it's shriveling. There seems to be more wrinkles specifically towards the head/neck area. Is that also normal? He is eating fine but likes to sit in the corner, behind the water bowl all day. I would assume this is the coldest spot and he is getting overheated, yet my cage is ranging from 78-83. Any tips? thanks.