If you have more confidence in Chinese, you can put more energy into Chinese review and keep a basic passing level in mathematics. On the other hand, if you have more confidence in math, then you can focus on reviewing math and keep your Chinese passing.
The most important thing is to make a good study plan, allocate time reasonably and stay focused. At the same time, seek the help of teachers or classmates in time to supplement their own knowledge shortcomings. Remember that every subject is very important, try to balance the review of each subject and improve your comprehensive ability in an all-round way.