Thanks for sharing this process, I agree that reading the signs of hunger is a good system! What do these "hunger signals" usually look like for your BP?
When mine was still growing, he would very clearly be waiting for food when he'd stick his head out of his hide a bit with his neck in an "s" shape in ambush position, however I rarely see him doing that now. He's usually out cruising around his enclosure or basking under his CHE at night, or he just stays in his hide.
Does your 16 year old BP also eat roughly just under 10 times per year?