unable to finish SAT grammar section within time frame

I’m always rushing in this section because I want to finish all the questions. when I went over what I got wrong, I found out that I made a lot of stupid mistakes I shouldn’t made because I don’t have enough time to think about the choices. I feel like if I have more time I can definitely done better. my test is in one weeks, but I still feel so unprepared😩😩I don’t know what should I do