Usually my snakes become quite active and roam the cage when they get hungry. I still wouldn't feed just because they are doing that. Some, like my adult amel would eat everyday (my green tree python too) if you gave them food. They act hungry all the time. Feeding hatchlings or a snake on pinkies every 5 days is fine. Once off the pinkies, once a week will do until they are adults. My amel gets fed every 2 weeks.