Sounds like someone did their homework!Welcome to the forum!
Yeah, some of them don't really like baths. I usually put the snake in a tupperware container with holes in it so I can let the snake soak for a while. Most of them are not cooperative when I remove stuck shed.. Such is life!
I would stick with the live feedings for the next couple meals to ensure he is getting enough to eat, then you can try a similarly sized frozen mouse or rat and see if he will switch. Sometimes babies won't eat F/T too well at first, but will eventually get used to it.
You could also get different hides, like the ones suggested by Aaron. I use those middle ones for my hatchlings.