At a year old he should be eating rodents much larger than a fuzzy, BP's can eat hoppers right out of the egg.

Do you have a scale? you should feed your BP a rodent that is 15% of the BP's body weight. So a 100 gram BP should eat 15 grams of rodent (100 grams x 0.15 = 15 grams)

If you don't have a scale then you should feed your snake a rodent that is as wide as the widest part of the snake.