You can buy some reference books and go home every day to review new knowledge before doing your homework.
Chinese means reading more and writing more. You should often read some literature books, learn writing skills and accumulate more sentences and vocabulary. In mathematics, we should recite formulas and definitions, do as many exercises as possible, and master more questions.
English should also be memorized, every word should be memorized thoroughly, grammar should be clear, and handwriting should be neat.
It is best to make your own study plan and arrange your time reasonably.
Also, don't be too stressed, have confidence in yourself! Come on! Wish you success!