How do you process those extremely convoluted bio passages?

I'm currently doing UW bio sections. I watched and followed along many bio passages walkthroughs on Youtube; while it helped a lot with the easier passages, I still have zero idea how to process the convoluted ones, it always be something like this:

A causes B, then causes C, which inhibits D, activates E, then inactivates F, and Pt will experience more shenanigans, but apoenzyme G + H will activate the transcription I with the help of enhancer J, causing K, which exhausts L, which is needed for B when pH= 7.545, etc. And here are 4 graphs, 3 charts, 2 data sheets, and a western blot result for you to analyze...

I tried to map it out, but always ended up wasting 10 min; tried to read questions first, but end up forgot every questions; tried to skim the passage, but then I won't remember & understand anything that's happening and have completely no clues about the graphs/chart/data; if the questions ask a pathway/graphs/chart/data question, I have to go back and reread everything all over. So someone PLEASE tell me what am I doing wrong? Or what should I do even? Like I constantly see ppl say just skim the passage, but it feels like if you miss one thing, the whole process fall apart and makes no sense, so how do you even skim the passage without miss anything?