this is how i got my bp to start eating again... i put a fuzzy rat in his cage, turned the lights off (bp's are nocturnal they feed at night in wild), made sure there was no other action going on in the room he was in and just left it in there for a day. he came around and ate it. after that he started eating regularly again. hope your guy eats. i wouldnt worry too much tho a month isnt too long