how do i ask for less hours
just got hired at a fast food place for my first job (i'm in high school) and i'm being scheduled close to 30 hours a week, but that doesn't give me enough time for schoolwork and ECs, and also just to have free time
i'd like to be scheduled 15-20 hours a week, so my question is what's the best way to ask my manager for less hours? (it will be over text)
i'm not really sure how to ask, so any advice would be greatly appreciated!