Be sure to do more math problems, preferably test papers. After you finish the questions, you need to see what you did wrong, which one has more time to say, and the way of thinking when you did those questions is wrong. Those ideas are good, you can remember them. There is still 1 month, so we need to master more basic things. Come on! If you have any questions, you can write to me at the station. Wish you success!