Honestly, I'd leave the temps right where they are, your set-up is very nice, the time you feed is correct, & I can't see that you're doing anything wrong. Many BPs are quirky feeders, especially once they're adults, as yours is. And male BPs typically eat less than females, since they aren't under the body-stress of reproduction.
One thing I forgot to ask is what size food (rats) you're feeding & at what frequency? Especially if you're sure this IS a male BP, you should be feeding small rats only- & personally I'd only offer every 2 weeks. It's likely that you'll have a much better food response from your snake if he is fed a bit less, especially as time goes on. It's easy to over-feed our captive snakes, especially since they aren't getting lots of exercise. Seasons can also influence their feeding habits- adult snakes may be thinking more about a mate than about a meal at times.
There's nothing wrong with a snake that likes to be "drop-fed" anyway. Some snakes are just shyer than others, & may tend to prefer lights out. I have a very shy Korean rat snake that I've had for about 11 years now, & it took at least 8 years for him to be bold enough to grab food from my feeding tongs. Before that, it was "leave it in the dark, no peeking & just go away, lady!" Snakes will be snakes!![]()