Need to improve my SAT Reading Score

My score on the SAT is 1450 (800 on math and 650 on Reading/Grammar) I only missed 3 questions on the grammar portion of the test, my reading is awful. No strategy is really helping me improve my reading score. I always struggle to finish on time and end up rushing to finish which significantly impacts my score and also often don’t get the gist of a passage. Should I start memorizing vocab words given by Erica Melzer, The College Panda, and Prep Scholar? And how can I increase my reading speed while still comprehending what I’m reading. Please help because this might do wonder to my SAT score.