I don't know if I am just over thinking this entirely but I was curious. I spent a ton of time reading this book to an obsessive standard where it was literally all i thought about and engaged with for basically three months, I went through it multiple times and everything and for the time that I was reading I felt super connected to the material like I was an expert on it beyond just knowing the material but then eventually I was brought out of this obsession and I had to actually do other things for a couple weeks and for those weeks and after it was like I never read the book at all. For those two weeks I didn't think about it like it never mattered to me and then when I went to go back to it after it was almost like I never read it.

Maybe I just have bad memory but I feel and have had experiences in the past where I can't remember anything and then my focus or attention gets captured in a certain way and then I can remember it all again or at significantly better than what it was. Has anybody had anything like this that is in anyway related before?