My adult female has been on mice for about a year now (was never a problem feeder before that). Since she's big enough, and one mouse doesn't cut it for a meal, I start out by feeding her a mouse (she feeds solidly on p/k prey)--this gets her in the mood. I then have the rat, and 2 additional mice that I kill by c/d; I put the rat in the bag that the mice were in (already has poo and pee in it), then after I kill each mouse I drop it on top of the rat, that way their death pee/ poop scent the rat. I leave them there for a few minutes, and if she doesn't take the rat, I throw it in the freezer for my male who east f/t, and just feed her the 1 (or 2 if she'll take it) mouse. If she eats the rat, then the mice go in the freezer for another snake.

Alternatively, I have had success with thawing out a mouse, killing my rat, and putting them both in a bag. I've even hit the two with a hair dryer just to really get the stenches going. Not exactly applicable since yours eats live, but it's worked for me. Good luck! Jellyside of your situation is at least he's eating!