A related question if OP doesn't mind me highjacking the thread: What a good rate for feeding hatchlings and juveniles (snakes under one year old) to keep them on a steady upward trend without overstepping into powerfeeding? The three guidelines that are most often quoted are feed 10-15% of their weight, feed prey items the same size as the thickest part of the snake, and feed prey items large enough to leave a bump. I just bumped my 300g+ girls up to 40g weans once a week because they didn't seem satisfied on the 30g pups anymore, even though those are a little large when going by the 10-15% rule. Going by the "thickness" rule the prey items still seem a bit small, but going by the "bump" rule, it seems about right.
(Personally, I'm just going to keep going by their feeding cues and keeping to a regular schedule.)