While it’s always good advice to take notes and write down summaries of what you’ve read, this passage is especially suited for that method of Bible study.
First off, chapter seven is a long chapter. With anything that we read, our minds can easily wander even while our eyes continue moving from word to word. If we stop to make notes in the margins or in a journal, we are keeping ourselves accountable to reading in order to understand, not reading to get it done (and out of the way).
This chapter also covers lots of different topics and within those topics Paul will go back and forth between his views. Try to break it down in parts, step back and ask yourself what is he trying to say and how does this fit in the broader themes of 1 Corinthians? If nothing else, this practice will at least reveal the questions you may have and that is the first step to finding some answers.