Does anyone have any tips on how to simplify/get main idea faster in RCs?

Hey guys, in my untimed practice of RCs from the Big Book I usually get around 6/7 or 7/7 because I have a good understanding of the passage. However, when I switch to timed practice, I try to rush through the passage and usually get around 4/7.
I have a habit of reading aloud when going through RCs because it helps me stay focused and understand. Should I switch to reading silently and moving quickly through the passage?
For shorter RCs I don’t have the same problem and can go through them rather quickly.
I would like to know what strategies you use in reading and for taking notes[main idea/Simplification on Steroids].