How to do well in the new PSAT

I’ll be taking the PSAT, and I was wondering what should I do to prep. I am doing the free online PSAT test (only one avaible) and doing the free 4 practice SAT tests online. What are other ways to prep? I’m not good at all at standardized tests. I do well in school but I straight up suck at standardized testing. My states predicted cut off is a 1380 (Oklahoma). So what can I do to prep in the next 2 months? (I should’ve started earlier…)

Do the Khan SAT prep not just the tests.