Try crumpling up some balls of newspaper and putting it in his enclosure.
Are you allergic to aspen as in, you can't touch it, or allergic to the dust?
Some picky feeders(like mine used to be) can somehow start eating when put on aspen, mine did the next day after the change, but that's my snake.
I would keep on with the live, and try a small adult mouse in his enclosure at night time, if you have too, sit and observe for a couple hours.
My hatchling also did not eat for a couple months. I switched him to aspen, crumpled some paper, and gave him a small adult live mouse in the middle of the night, and sat about 6 feet away from his cage with a book and just watched. Eventually he came out and got it, and ever since that first feeding is an eating machine!