I feed my 12 year old about once a month with a 3 month break in winter. She gets jumbo rats but I really want to get her some rabbits & quail to try too just haven't placed an order recently.
My two that are a year old get rat pups or adult mice every 2 weeks and they have been on that schedule since they were around 6-7 months old. My male will either be pushed back to 3 weeks or smaller meals at every 2 weeks haven't decided.
My yearish old dwarf boas get fuzzy mice every 2 weeks.
I would go with bigger and more spaced out feedings probably.