In all seriousness, I stopped going to lectures* and studied at my own pace. My learning isn’t linear, so there will be some topics that are easy that you can move quickly on. Other topics take more time. Sometimes you can take a detour and dive deeper kn interesting topics.

Going to lecture, sitting in lecture, waiting around, etc. provided very little information per unit time for me. I can’t learn math or anything quantitative from watching someone do it. By using lecture time as study time I was able to double the time spent learning the material.

When you get stuck, go to office hours. Or look for notes from similar courses for a different perspective.

At the start of the course look at the book and see what the prerequisite material is. Review that material during the first week when there is time.

* exceptions being courses that have a participation grade.

I tried my best to have profs that followed a textbook.