Advice Needed: How to Prepare for Bio SAT Subject Test?

Hi, I’m going to take the Biology SAT II test in 3 months but I haven’t taken AP Bio yet. What prep book or resources would be best to score 750 or above?
Any advice or experience is appreciated, thank you!

Please help

Have you taken regular Biology or Honors Biology at least? Barron’s is the go-to book, but keep in mind that there are a few typos/errors in it.

Yes, I took regular biology but that was three years ago and I’ve forgotten most of it by now.

I’m in the exact same boat. I’m a rising senior and signed up for AP Bio this year but I’m gonna take the subject test in September lol (last time I took Bio was 9th grade)