Need help on PSAT/SAT and ACT reading

<p>I REALLY need to improve my critical reading score. I have taken 7 practice tests and my reading scores are fluctuating randomly, low as 560 and high as 600. It seems like I am not improving. I only have 3 1/2 months to improve my reading score before the PSAT. I have been reading magazines, novels, and practicing lately but it seems that my scores aren't improving. A big problem i have is crossing out all the answers and im left with 2 and i cant pick between them. Other problems I have are difficulty focusing on the passage and getting the main idea or "big picture". For some passages i think i understand them but then i cant answer the questions. Others, I have a really hard time understanding. Also for the ACT reading, i can never finish the section in time! I even took a speed reading course and i still cant finish it in time and im always looking back at the passage. I really need some advice on how to improve my score. </p>