More than two months, just enough. It is feasible to study mathematics only to meet the requirements of higher vocational examinations. You should make a study plan first and spend about 2-3 hours on math study every day. Read the book first, understand what it says, then consolidate it with practice and practice it again and again. Do the exercises in the book for about a month first, and then go back and review it again. 120. No problem. I got 140 in the college entrance examination less than two months this year. It's very simple, and I don't need to go deep to understand it. This is not advanced mathematics, it's all high school content. It shouldn't be difficult. Just be serious, but be serious.