I agree with Aaron that this sounds like something is off: temps warmer than you think, oddly extreme breeding behavior, or possibly-but-doesn-sound-likely something health wise is wrong causing "pain" or stress. In elderly corns nearing the end, I tend to see lethargy, a reduced appetite, and a loss of body mass faster than you would expect based on the calories in. Basically, they lose mass even when eating or lose mass faster than they should even when eating a little. Those are the typical signs of senescence in my experience.

For elderly snakes, I often switch to small rat "pups" - depending on snake size - for the added calories and ease of digestion. (Rats are generally harder to digest cpmpared to same mass mice, and that is part of the reason you go small. The other reason is digestion is easier on prey with a lower surface:volume ratio. You do NOT want to see a bumb after the eat unless you know they can still easily digest it....which you seem to currently have concerns.

I don;t usually recommend feeding live, but a live SMALL rat "pup" can't hurt the snake, and it might trigger a feeding response....even if you leave it in the cage instead of a feeding box for now. Think of it as an option if you feel it is necessary.

...and a vet visit should always stay an option if you feel that is needed.

-KJ Lodrigue

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