I have time for that: I exercise, I read. The problem is I cannot schedule in the stuff that is hard where I need progress. Let's say I must understand Shanno

I have time for that: I exercise, I read. The problem is I cannot schedule in the stuff that is hard where I need progress. Let's say I must understand Shannon's perfect secrecy, which I do abstractly, but these 3 quiz questions I do not get. 10 minutes passes, I have no answers. 20 minutes passes, I am not closer. Two days later, do I need to go back and review the notes from the whole lecture to steer this ship back on course? My point is context switching to topics I need to advance in, not the ones I know I can advance within parameters, consume time but with variable estimates of duration AND worse any success at all. What are people in this spot doing? Just chugging along? I am going to not take these courses for credit, but I do not spend some time daily for the last week dropping one or all and admit I will never be the programmer I said I would be like 5-10 years ago! Haha. UPDATE: To be clear, after those 20, I procstinate a little, and maybe come back. Or I move to a different class, or something else. Point being I have no way of knowing if it will click, and when. So scheduling these things adds another level of failure, where I miss deadlines I impose, and I start cussing myself out for not reaching my own desired accomplishment for the day.