I feed all of my BP's every 4 days like clockwork. I don't at all consider it power feeding. I give them one prey item per feeding, except for my Mojave female, she usually prefers two lol. And I always give them prey that's just bigger than their largest part of their bodies. Ball pythons are far from brown snakes. But if you want to just feed them once per week, that would be fine too I'm sure. I want to breed my snakes so I do want to put on good weight, especially for the females. But you seem to just want them as pets, so once every 7 days would be fine.
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