Colombian Rainbow Boa Won’t Eat. Tried Everything. Need Help.

[Umbrax]

My Colombian rainbow Boa won’t eat no matter what I do. I got him one month ago from bhb reptiles as a baby and I did everything everyone says to do when you first get a snake. I had the enclosure setup prior with proper temps and a numerous amount of hides, and when I got him I put him in and left him alone for a week before even attempting to feed him. After a week I tried feeding a fuzzy to him and he showed absolutely no interest, I waited a few days and then tried again, still nothing. He doesn’t even acknowledge it. So after that I waited a week and tried again, this time braining the mouse, heating it up hot, and coating it in chicken broth. Still nothing. No interest. I’ve tried once every 3 days from then, trying new methods i find online to no avail. It’s been a little over a month now and the snake still shows absolutely no interest in food. The tempts are where they need to be, cool side 75 hot spot 85-87. Humidity is always over 70%. in addition, the snake shed fully and nicely with eye caps a week after I got him so I know he’s not in shed currently. I cant try rats because they are too big for him, even pinkies. Here’s a full list of the things I’ve already tried:

Braining the mouse, Blow drying the mouse, Scenting the mouse, Cutting open the belly of the mouse, moving the snake to a smaller enclosure with more hides to help with security, leaving the mouse overnight, placing the snake into a small tub with the mouse overnight, wetting the mouse in very hot water prior to offering, offering smaller and larger sized mice of different colors.

What the hell am I supposed to do now. I’m scared for my snake, and I just want him to eat so I know he’s ok. This whole thing is stressing me out. I’ve made absolute sure my husbandry is on point and I did a TON of research before getting the snake in the first place so what in the world could I be doing wrong.