Adding a visual element – even a doodle helps you process what you’re seeing or hearing, but drawing stick figures or doodles you’re “writing” what you’re learning on your brain twice – once by hearing or reading and once by drawing. This is called dual coding. This helps you process information better, you’ll recall faster and retain information longer.
You can doodle or you can try adding very simple elements – stick figures to your notes. I promise you’ll be more into your notes, and more apt to review them if they have some visual element on them.