Balancing Sixth form, a job, and life

On an average week i work 14 hours, plus i’m at college 5 days a week. I have guitar lessons and practice i have to do and going to the gym. My guitar lessons are important because of my a-levels. and going to the gym everyday isn’t something i’m willing to change.
if i could drop out and work full time i would. I can’t afford to quit my job, and i don’t have enough time to revise or do homework, and am often in trouble for not completing tasks. when it comes to revision, i feel like i know very little, and never know what to prioritise because i’m told that every little thing is “something to work on”

my college states we have to do 4 hours of independent study per subject per week (excluding set homework tasks) and i don’t think i’d ever have enough time in a week to do that

What are your hours for sixthform per day and could u like show per day how many hours spent on your tasks as in school gym or school guitar lesson or however it’s structured.