Heres generally what I do.
Start off with 1 pinky, then when pinkies become invisible in the snake after ingestion, I bump up to 2 pinkies for a short while, maybe 5-10 feedings. Then I go to fuzzies, then for the same reason with pinkies, I'll go to 2 fuzzies, then a short while later a medium to large mouse. I dont like small mice because they dont seem to have much meat on them so I feel it's a waste to even buy them.
It's all about the perceived lump in a snake after it's fed.
When snakes are small, they're able to grow rapidly, so feedings are about a week apart, but as you get up to 2-3 full grown mice in a feeding, then I slow down to about once every 2 weeks or so.
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Tom
TCJ Herps
"The more people I meet, the more I like my snakes"