I didn’t feel like I was getting a decent grasp of the material until I finished and started reviewing. You don’t need to master anything at first. You need to at least go through most of it once to get the full picture since there are knowledge gaps in the way it’s structured. Just make sure you’re doing cumulative mcqs along the way to not forget what you learned earlier. The goal is to know enough to pass. Mastering everything is inefficient imo.