Update 12/26 - Continuing daily meds and his third injection yesterday. He started to shed yesterday as well, but it was in bits and pieces. I've offered him f/t fuzzies and regular mice, but has rejected them consistently. After his nightly soaking last, my wife and I 'peeled' the rest of the shed off.
This morning, he again refused a fuzzy, but I got to thinking. The one f/t mouse he did eat on his second day with me, he struck it hard and constricted for 10 minutes. Then, he backed off and really studied it for a while before reluctantly eating it. Since the seller hasn't been a font of information, I wondered if maybe he had been feeding him live. So this evening, I went and got three females, a small critter keeper, and some food.
Having used up all my patience in military doctor's waiting rooms, I put Butter and the smallest of the three mice in a 90 qt feeding bin (hey, it's in my living room - I wanted to make sure the mouse couldn't make a break for it). Mouse got nose to nose with Butter and scooted; Butter got interested. Mouse made a second trip around to Butter's business end, and he didn't hesitate. Bang, wrap wrap. He did take a minute to acquaint himself with which end was which, but down the hatch the mouse went, and now I'll just wait and watch to see that he digests it fine.
I don't really want to feed Butter live prey, but if that's what he eats, that's what he'll get until he's healthy and plump and has plenty of reserves for our battle of wills. I'm just glad he ate.
Time for a toast.