So yesterday he finally ate. He is a very bad striker and gets discouraged easily. I offered a hopper ASF but went down to a fuzzy so he would feel less intimidated. (I know it isn't the best idea to feed hatchling BP's live ASF but this guy was just too skinny.) I will feed him again on Friday and see if he will take a hopper.
His vent looks pretty healed. I decided to pop him yesterday and everything looks good. He is passing urine and urates without a problem. Still no feces yet.