Please Help!!

Ok guys I need some help. I'm a senior in high school and I have two part time jobs. In a couple of days I'll be starting college courses on top of my schedule. I obviously will have to cut back on my hours at work. I want to drop one job completely but I'll feel like I'm disappointing my parents. They are always bragging about me to everyone and I feel like if I back down that I'll make them out to be liers. What should I do?