Which brand of books should I get to prepare for SAT subject tests?

I am taking the SAT math 1, literature, and U.S. history subject tests in October. I have Barron’s books for math and lit, but I have heard that those books have problems and passages that are much harder than the actual test. I know myself well enough to know that this won’t do me any good come test day. I’ll psyche myself out, or I’ll assume the test will be much easier than it actually is and then end up not being prepared at all. I want to get books that mach the real test as close as possible so I know what I’m getting myself into come test day. Any suggestions? I don’t want to use the book put out by SAT itself because their material is so limited (I’m talking about the one that offers a little but about all the subjects in one book). If anyone has taken those tests, what book did you use and how much did it help you? & I do know that College board has practice questions, and I plan to take advantage of that, but I want more material to help me as well. Thank you!

P.S. My sister is taking the same tests as me, but biology instead of US, so any suggestions for the bio test are welcome as well.

I used Kaplan for USH, read it through and took all the tests, and got an 800 in May while taking APUSH (also read the Princeton Review APUSH book). The Kaplan tests are harder than the real thing - I was scoring ~750 on them.

Honestly, I would use the Barron’s books you have, and then take the real one put out by the SAT (I literally just sat in the bookstore for an hour and took it, but I also live near a really chill bookstore) because it’ll be a lot easier and will boost your morale right before the test.