When most talk about power feeding they are usually talking about daisy chaining rats one after the other by putting the head of the second rat in the snakes mouth right as it finishes the first, forcing the snake to eat more. This is a process I would not recommend.
Feeding every 5 days is the normal feeding schedule for baby/juvi ball python and I feed every 4-5 days until the bp is at least 400-500 grams.
That being said, even if you fed a baby every 7 days, it's not like you would be under feeding it.