New BP owner here.

I acquired a 6yo male, about 3 1/2 feet. I'm thinking he might be significantly underfed. His previous owner had been feeding live adult mice every 7-10 days. I've had him 6 weeks, and in that time fed him 3 frozen large mice. (The plan was to feed weekly, but he needed time to get settled, then a shedding, and a missed meal.) He's scheduled for a feeding tomorrow.

Everyone I've talked to says his isn't being fed large enough food, and that mice aren't that nutritious. I found a local breeder and acquired frozen medium ASFs for him. But when the breeder showed me his snakes, I realized just how, for lack of a better term, full they felt. My BP's skin is very loose by comparison, and he seems smaller in diameter.

I got a digital scale and finally weighed him. 882 grams.

Any thoughts? What should he weigh? I trust I'm doing the right thing by switching his diet like this.

Also, in the 6 weeks I've had him, I haven't seen anything I'd recognize as defecation.