At first glance you offer to often leading to more refusal, and you do not offer the proper size prey, I assume you are offering mice and fuzzies are not adequate for a BP not even one out of the egg.

There is likely for going on.

How big is your enclosure?
How much does the snake weighs?
What are your temps?
How do you offer food?

A snake that knows how to eat should not be assisted however you need to find out what will trigger him.
How big are your hides?
How often do you handle?