I would try a small rat pup/pinkie in the enclosure overnight. Small pup/pinkie, will have its eyes closed and you won't have to worry about it hurting him. Make sure tub is not out in the open where he is getting stressed. If so, cover 3 sides of tub/box. Also, trying a rat maybe offering different prey item may be enough to do the trick. He should not have been force fed that much, all it does is stress them out big time. Obviously we dont want him to starve, but there are so many other things to try first. Good luck with the little guy.