Everybody help me think of an idea that can make money without delaying my study.

It's really troublesome. Japanese middle school students have more jobs, while China middle school students seldom use tutoring, and most of them are college students. But you are only a sophomore (I am also a sophomore), so we will wait until you go to college. In fact, there should be other ways to make money. Although your father is sad, he will have ideas. You can save money at home. I wonder if your school can apply for a poor student or something. If so, now is the time to apply.