I use the munson plan, but adjust my snakes' weights up about 5 grams before going up a step, and I start with the lowest weight mouse in the range, and I don't feed less than 5 days for young snakes. They are weekly once they get to hoppers. My adults go to every two weeks when they reach 200 grams. And I slit the mice until the snake is on adults. And I don't ever feed larger than a medium adult mouse.