Hi all. I have a one year old male western hog. He has voraciously eaten 2-3 live pinks/fuzzies every single week since I got him last August. I don't know what happened but for the past three offerings he has not eaten or appeared very interested. In the past he has hardly waited for the mice to leave my hand before striking. He does not appear to be in shed, there are no signs of injury, he seems alert and active, no changes in his environment, etc. The only trick I have really tried is to leave him in a container for a few hours with a live fuzzy, with no results.
Is this normal and should I be more patient?
Should I try braining or any other method?
How long should I wait before taking him to a vet?
I have been keeping snakes for about two years now and have never had problems with feeding so I am just getting nervous. ANY tips, advice, etc would be greatly appreciated. Thank you in advance.

