I assume you want to know why he is still very active? (Forgot the question)
It could be the results of a few things based on what you wrote and the picture.
When you said you fed him fuzzies I assume fuzzy mice? If so fuzzy mice are way too small for a BP, the average hatchling takes a hopper as a first meal and quickly move to adult, so my first guess would be that he is still looking for food.
My other guess would be husbandry related, while you might have not experienced any real problem yet you might want to make a few changes in your enclosure. I would highly recommend to replace the dial thermometer and hygrometer by a digital thermometer and hygrometer, dial devices are not accurate and could give you a false sense of security. And if your husbandry is off it could lead to a few problem such as an active BP.