Sounds almost like he is one of those that are always ready for food !! I have a couple of those, LOL.
Best is to get a ritual that shows him, nope, not feeding time right now. Slight tap on the head from above or covering him with the hand should do it. You can use a snake hook to tap him slightly. And I can't over emphasize to do it gently. Don't want people bonking their BP's over the head based on my advice, LOL.