I need money and another body

I'm working a part-time job and "not enough..." became a reality. My workplace is a restaurant, and we have a lot of staff. Since we're high schoolers, we can't work late nights, so I can't work that much... That's unavoidable. I'm thinking about taking on short-term gigs or picking up other part-time jobs to juggle. However~ I have things I want to do. That's club activities! But I'm also taking lessons, so it becomes four pillars: 1. Studying: I'm a student, after all. 2. Lessons: I've been doing them longer than my part-time job and I like them. 3. Part-time job: It's necessary for myself, for things like lessons and saving money! 4. Club activities: I want to do them, I've been invited, and I want to see how far I can go and achieve results. *Both lessons and club activities are sports-related.* If I had one more body, I could have one for studying and my part-time job, and another for lessons and club activities, which would then combine for my exams... I'm imagining a world where that's possible... What should I do?