My adult BP, same length, stopped eating in Nov of 2010. He actually has shed twice since and is in shed right now. How he's shedding without eating is beyond me. His husbandry is spot on so it isnt temps or anything like that. I was speaking with a long time BP keeper and he told me to check his weight to make sure he's not losing much. (Only about 50 grams in all that time). He also told me not to assist feed but to wait and see what happens when ambient temps heat up. I'm in the northeast and it's still pretty cool here. He's an adult, he'll eat when he wants to. I'm going by that. Were you weighing your guy regularly? Has he lost a lot of weight? If not, I wouldnt worry about it.