After doing what Kanoo said (second opinion) find someone who can afford his treatment to make him comfortable, as in give him away. Will the treatment ever make him 100%? Can he live a normal life with the proper care?
Ive been in several situations (Chief stepped on a roofing tack and got a coffin bone infection despite getting immediate vet care, Junior was born in the sun (Thank you very much Laila for giving birth at 3pm on a warm day in April and the one day I didnt close you in the stall

) accidentaly ran over my dogs leg and broke it...the list goes on)with my animals over the years and Ive sold my trailer, round pen, worked out a payment plan with my vet, used the money I had put aside for Chief's training and brake job on my truck and so on to take care of them. My vet once told me every horse owner should set aside 1K in a "cookie jar" for an emergency. Its never been the lack of money for vet care, its been a huge vet bill situation. No fault of my own, things happen you cant control. Thank God I havent had any serious issues like colic in ions. Im a very "easy keeper"

. I buy nothing for myself and sacrifice alot so I can keep my horses healthy.
Godsgifts, I hope you get your boy taken care of and figure out what to do, but please dont wait too long to decide whats best for him. He cant tell you what he wants so like many said, you have to be the voice of the animal. Best of luck