Rehabbing a Newly Recaptured Escapee

[SerpentineDream]

My hatchling male black milk snake, Perseus, escaped from his tub about 11 weeks ago and has been roaming the basement ever since. It was a boneheaded mistake on my part - I failed to make sure that the lid was properly secured. He did not fail to notice that it wasn't. I only caught him today when my husband spotted him in the stairwell.

I currently have him in a (secure) tub on paper towels with a couple of disposable hides and a dishwasher safe water bowl in case I notice mites or signs of illness. He's in a separate room from the rest of my collection. He appears a little bit thin, but considering how long he was on the lam and how small he is (approximately 15" long and as thick as a Sharpie) I expected much worse. I didn't immediately notice any mites and there appears to be no sign of injury. I plan to offer him a F/T fuzzy mouse tonight.

Any suggestions for rehabbing him? Anything to watch for? How long should I keep him in quarantine?