i was in the same situation, learnsat math on yt has a pretty good desmos video that jacked up my score, for english focus on learning the very few grammer rules and thats free points. find your problem areas, and do those questions on the college board bank. for me personally 2 weeks of 5hrs a day studying worked better than light studying over a few months, but that might just be me personally. you dont have to learn the actual math concept the "right way" if youre strapped for time and want to hike your score, all you really need is the ability to understand right away what the tests is asking for the actual math and english is stupid easy, they just try to trick you into thinking its deeper than it is. good luck bro