I have no experience with these, but if you can obtain earthworms to feed him & give him some stuff to burrow in with rest & all, he might make it. I'd assume that
the diet is the deterrent for keeping this species...many don't have a good source of earthworms year round, or maybe they don't want to bother for such an "ordinary"
little snake? Your hot spot might be a little too high, especially if he has wounds that need to heal...I'd keep it no higher than 86* on the warm side for now & let him
rest.
An easy way to give him "cover" and simulate the leaf litter he'd normally inhabit is to layer some paper towels and tear them into narrow strips, then fluff them like a
"tossed salad" for a nice lightweight tangle that little snakes love to hide in. Good luck, I hope he makes it. If he has wounds, use Vetericyn (preferably) as it's made
for reptile use (water-based, NOT petroleum based like Neosporin, which you can use a tiny dab of IF you must, as long as it's not the "pain relief" kind). Or dab just a
little povidone-iodine (Betadine) on his wounds with a Q-tip...cat bites & scratches are VERY germy, infection is a serious risk here.