Hi!! I am on the EXACT same page as you. I average 2-4 for LR, but 10-13 for RC. What has been helping me is to read it TWICE. I know there is very little time so this is how I do it: I read the first time normally, then I skim the second time looking for things I think they will ask me + main arguments of each paragraph. This has helped me understand the overall idea of the passage and has helped me get better at answering the questions. Good luck on the LSAT!!