A large rat sounds like a big meal for a male? Smaller meals make for more consistent feeders.
What I usually recommend for bad feeders is
1) A smaller enclosure with tight hides, a 32 quart tub is cozy for a male BP.
2) Higher ambient temps (mid to low 80's) and warm basking spot (92)
3) Live smaller meals. Some get intimidated by larger prey. If he refuses live small rats then try mice. Give him a few days or a week in between feedings.
Most times males go off feed is because of cooler room temps. If it gets into the 70's many males will stop eating while others will stay the same. Many folks say but my other snakes are eating and they are in large enclosures and the same temps but what affects one doesn't necessarily affect other snakes the same.
I would bet $ that once the room cooled down in Sept he stopped feeding![]()