I like the blurb about your ZK being something which can actually hold you back. I encounted the same issue myself and found that ZK is not always the best fit for me.

I find the best thing to do when studying something is to go over your material, internalize and synthesize it in an essay. If you can't create an original essay which perfectly replicates the knowledge you want to understand then you almost certainly don't understand it perfectly.

Alternatively, create a detailed flow chart using subcharts if you have to. (Graphviz/dot is good for this)