I did the same but in addition I read things out quietly and asked myself questions about what I just wrote down and read. Not simply reciting the core points but trying to understand why they were put in that place, what makes it necessary for them to be that way and how they fit into the broader context. Additionally I'd "circle back" every now and then, i.e. question what happened in the previous page, then in the previous chapter.
It got extremely addicting to learn once I got the hang of it. It is remarkable (and quite frankly insane) how much knowledge you can absorb and internalize in a coherent way if you just blast every sense with that input and force your mind to "live and breathe" a certain topic.
(I still became an unemployed loser but at least I can learn fast!)
