Congrats on your first successful feeding! It is always great when they eat.

That fuzzy mouse is a very small meal for that BP. They can take meals that are the width of the widest part of their body. You can see in the pics that the fuzzy was closer to the width of the narrow head & neck. Bump it up a size or two. I think my BPs were eating adult (but not jumbo adult) mice when they were about the same weight.