ball python wont eat

[cad252]

i have a juvi ball python i bought him in march. there was a mix up an i got the wrong snake i was suppost to get a baby but i got him. he was full of ticks an mites, an to add to it he had an ri. i took him to the vet. by this time he hadnt ate for a couple weeks the vet said there was no reason for him not to be eating. well here it is the end of july an he still has not eatin. i pulled him to look at him an he is so weak. he isnt dehydrated cause he still pees. i have tried assist feeding but he isnt having any of that. i have read about force feeding, but what do u use food wise gatorade an what?