I have one who is skittish and WILL NOT eat while I am around or during the day. I had him for nearly 3 months before I figured out his taste. He will only eat Pre Killed left in his tank over night. Not F/T just P/K. Before I found that out I tried literally everything else.

Some people will argue with me, but I switch over to hopper rats as soon as my snakes are around 90g. I hate mice and ASFs I have terrible luck with them. So if I were you, I would kill a hopper rat and leave it in overnight. I usually take the hide out of my guys tub, but then again its a tub so he feels more secure. You could cover your tank with towels or something of the such to make him feel safe enough without any hides.

Good luck and don't worry, he will eat!