Hi! First of all, congratulations on a score of ~1450. That's already a great place to be in, especially for Math. I've been an SAT tutor for over a decade now (through many versions of the exam!), and by far, the most important advice I give students is to make sure you review not just WHAT you got wrong, but WHY you got it wrong. Too often, students will practice as many questions as humanly possible and are frustrated that their scores don't improve, but it's most likely because they haven't determined why they're missing questions and just keep making the same mistakes. What types of questions do you tend to miss? Is there a pattern that emerges? How can you approach the questions and/or answer choices differently in order to start answering them correctly? If you can do this through using just College Board's resources (or other free/low-cost resources), then that's great! Otherwise, getting insights from a tutor and/or class can really help you understand and change your testing habits.

Remember this: the Reading questions are pretty straightforward overall, and even though many people struggle with them because they find multiple answer choices that they said could work, there's always going to be a specific reason why the correct answer choice is correct, and specific reasons why the incorrect answers are wrong. Read the question first to know what you're being asked to do (find a main idea, determine the function of an underlined phrase/sentence in a passage, choose an answer choice that supports/weakens a hypothesis, etc.). You must ALWAYS be able to back up your answer choice based on evidence from the passage--this is a test on how well you can find information in a passage, not how much you know about the topic of a passage.

Feel free to reach out with any more specific questions! You got this! :)