Purchase a fuzzy... something too small to bite, leave it in the enclosure overnight after a long day of leaving your snake alone in a QUIET, dim lit room, in its enclosure.
Make sure your temps are correct of course, this probably all sounds like standard procedure.
But my Daisy wouldn't even touch food until i got her eating small fuzzies, after two fuzzies, she happily ate a stunned hopper *thump them once in the head.*
they may be deaf, but loud noises still cause plenty of vibration. darkness makes them feel safer from what ive seen. and also, go in the room as seldom as possible, or cover its sides with paper and tape to hide its view of others.
don't try to feed too often, it will only stress, wait 2 weeks before bothering your snake agian, keep up on the water, and after the 2nd weeks up, drop that fuzzy in there and check on it 24 hours later.
I hope this helps.