Focus on tackling difficult subjects. If there is not enough time, then don't solve the subjects with small problems and good learning first, and solve the difficult subjects first.
Draw up a study plan for difficult subjects, whether short-term or long-term, and complete it according to your own requirements every day, not too much, and gradually form habits, and then form good study habits.
4 Complete a problem every day (all subjects are ok, take mathematics as an example), preferably a big problem. If there is not enough time, multiple-choice questions can also be done. You don't need to ask the teacher immediately after you finish, you can understand and digest on the same day.
5 Chinese and English should be recited actively, because accumulation is very important.
You must stick to it. I hope my suggestion is useful. Come on!