How to study for the SAT Math 2 and Chem test?

Hi everyone! My subject SATs are in December. I have around 3 weeks left for both tests.Which books should I use and how should I study them? My goal for Math 2 is 750+ and my goal for Chem is 650+. What routine can I follow to insure I can get those scores. Thank you!

What is your current background in math and chemistry? It could range from needing little to no prep, to “take another subject test.”

@MITer94 Well I took the October Math 2 and I only used McGraw Hills book to study and it honestly did not help. I got a 650 and chemistry I didn’t do so well either. I am a really fast math learner and chemistry a lot of the stuff I know from the subject test because I took General Chemistry, the college course before. I guess for math 2 I can just take tests and review but chemistry even though I do understand the concepts I guess in the test I just do not know how to do well.