Brother, you can't learn math well if you are interested. It takes at most one month to finish reading a textbook. There are five textbooks in senior high school, advanced mathematics and mathematical statistics. If you just finish learning as you say, you can finish reading all the textbooks in two hours every day for six months. But the problem is that mathematics is an applied subject, unlike the liberal arts you studied before. You can pass it by remembering it. To learn mathematics from shallow to deep, we should not only remember the basic concepts in textbooks, but also apply them to solving practical problems. I'm afraid advanced mathematics is not a problem that people with this foundation can solve. In addition, mathematical statistics is also a very complicated problem, and its application is higher than that of advanced mathematics. If you just want to cope with the exam, you can refer to the real questions of the school or scientific research unit you want to apply for, which may save time and effort.