Trip to a vet did not help my snake, please help

[lifesong]

But he was eating for you, for the first 3 months??? How often & what was he fed?

Another thing: trying to feed a snake too often will only stress them into refusing. When a snake refuses food, don't offer again for another WEEK. You said you were
trying 3 mice a night...? No wonder he wouldn't eat.

FYI- I'm not a fan of feeding live either, but I put the snake's needs first, & worry about switching later. He or she does need to eat.

Yes, he was eating well after I got him started. First was pinkies (petsmarts suggestion) then after a few weeks I moved up to fuzzies and then right before he stopped he had 1 or 2 weeks of "small mice" (all the mice are petsmart arctic mice brand).
Thanks for the info, I thought perhaps offering different temperature mice might help that's why I was doing 3 in a night (one normal temp, slightly cooler, slightly warmer, all thawed in room temp water then warmed up at around 100 degrees before feeding). Sounds like he needs to destress big time, I'll get the substrate removed from his tank tonight and put paper towels down.