I would just wait a week or so. Maybe wait until you see him coiled inside his hide, with his head poked out? I usually just stop feeding my snakes who do not want to eat, until they exhibit this behavior. it worked for Goblin; he was off feed for a few months, and he would remain either coiled up in his hide completely, or he would cruise around the cage at night (and ignore any food I put in there.) One night I finally saw him iin his hide with his nose poked out. I thawed a rat, and he grabbed it from my hands before I could think!
Of course, this is all asuuming he is not losing weight. How long has your BP been off feed?