Ball Python Super wrinkly before shed

[Pythonfriend]

so the BP has a nice water bowl with fresh water.

then i dont know. it looks like there is a really big shed coming. and it also looks like the BP recently deflated and/or diminished in size.

what is the feeding situation? how do you feed it?

EDIT: depending on the feeding, if its not just underfeeding, maybe a fecal exam to check for internal parasites is a good idea.