So worried about SAT 2 Japanese

Since I am almost finishing my education of Japanese in my school (for 2 years), I would like to prepare SAT 2 Japanese. I don’t know why, but Japanese is only in November, so it’s a lot of time to prepare.
However, I tried to find some books or material about SAT 2 Japanese, and there are almost NONE of them.
The only one that I found was the official practice questions which are on the Collegeboard website.

I want to prepare, and there are ALMOST NO MATERIAL!! I am so worried, can somebody help me out?

It’s the same as German: not many people take these exams, so there are no review books. The only book you could buy is the Blue Book for all Subject Tests. It has one test for each subject.

well, does that preview test helps a lot?

That is up to you. How much benefit do you get from practice tests in general? How much do you want material to practice?

Only with ‘one’ practice test would be kind of a hard situation.
Since that I go through with one practice test and realize what I’m missing, and study, then take another one so that I can improve my skills.
But there’s no choice, so I gotta get that book anyway.

You’re welcome