No clue where to start

So I juts figured out that a school I’m looking at for nursing recommends applicants to take the SAT subject test in chemistry. Here’s the problem: I would like to take it in August and I took honors chem in 10th grade and haven’t looked at the material since so I have no clue how much I remember and where I stand. In addition I’m still prepping for the ACT which im taking in july. If you have any advice on where I should start or what books to use please let me know asap thanks in advance

I’m a rising senior now

Buy the Princeton and Barrons review book and practice on the collegeboard website for practice questions and maybe practice tests. @pl215382 @pl215382