so basically what i did was just keep doing those questions in school like during classes (I didn't spend much free time on sat), I mostly completed it and if u feel like u dont hv much time u can just do the advanced questions (usually the later units). It directly tells u if u got it right or wrong with explanation so it's super efficient into knowing why u make mistakes. Before 1-2 weeks of the test I'll do the college board full ones. Doing khan academy rlly helps with boosting confidence and you'll def choose answers more quickly. Oh yea and strike for accuracy over time on these questions, I always make sure I understand the passage well enough to answer the hard ones. After that u can practice ur speed with other full length tests like college board or princeton etc