I have a 300g half a year old girl that is a pig. At all times she is in her hide with her nose sticking out waiting for prey. If I open her tub for anything she immediately comes out in "feed me" mode. I feed 1 appropriate sized rat pup/sm weanling every 7 days. I've tried feeding her every 5 days but she just got fat and still acted hungry. I'd say it's perfectly normal. Ball pythons are opportunistic hunters so just feed them appropriately to keep them at a healthy weight