Right now, I'm going with the "leave him alone" strategy. No handling, no disturbances, only refilling his water dish. I'll offer food every few weeks, trying the suggested methods. I'd prefer to leave pre-killed as a last ditch effort, but I'll keep in in mind just in case. I thought about ASF juice but it's just so expensive and not a sure thing so I'm not keen on that method yet either. I'll keep y'all posted, as always.