SAT II subject tests and AP

Hey guys
So I am currently taking both AP chemistry and APUSH, taking both AP tests this may
However I don’t know whether to take the related SAT subject tests two days before the first ap test or a month after.
I don’t want to restudy all the material yet I feel like a two day gap is hard to fit in studying for two different tests.
Help? Thanks!

Either/or. I also took the subject tests in June and it worked out fine.

SAT Chem is actually relatively easier and is about the same format (at least when I took it in 2013). I would use it as another study test for the AP exam.