Well actually you can try feeding it a fuzzy once every 4-5 days. I would say that you should change your feeding time from 4-5 days to once a week when the snake grows to a yearling. I would say at least 1.5 feet long. (or at least 18 inches long) Then around 2.5 feet or more an adult mice once every 10 days is good enough. Just my little opinion. You can do more if you want.
Good luck and Happy Herping!