Hog Island Boa wont eat? help :(

[KingKrush421]

Hi everyone.

I have a male hog island boa. When i first got him, for a few months, he was a great and easy feeder. He'd eat consistently no problem

One day, he became really uninterested in food completely for some reason?

His temps are good, hes got multiple hides, his water dish, and everything he needs to make him comfortable.

He is visibly underweight.

I brought him to the vets, got blood tests. x-rays, the works done. The vet couldn't see anything wrong or out of the ordinary.

Is there a reason he just randomly wont eat? It's been 6 weeks since hes last fed. Do they have internal biological "winter hibernation mode" clocks?

Since hes only ever been on frozen / thawed, the vet suggested to try force feeding him something small. He said this can start them up and get them going into eating normally again.

Any thoughts and / or suggestions?