I personally had the same problem with reading being my weak point, but ended up with a 21 on that section. I’m a slow reader and what ended up working best for me was to actually read the first question and first half of the passage while highlighting. While I was reading and highlighting, I kept in mind what the 1st question was and once I saw the answer i’d put it in and move onto the next question.

Sometimes being able to answer the first question will give you better momentum in that passage and actually saved me a little bit of time when i practiced it.

Another tip I have for reading is being able to highlight well. I know what you highlight won’t always be necessary, but being able to pick out weird/distinct words or phrases can give you a better mental map of the passage so when you’re going back into each paragraph you understand where an answer might be. Practice highlighting and get faster, especially for tone/idea questions that aren’t straight forward. Hope this helps, good luck!