I tend to go for notes chapter-by-chapter. Among other things, it takes long enough to read a chapter that I get to the point where I can remember any particular idea with ease but the flow of concepts has mostly been lost and all of the pieces have been shunted into long-term memory. If I can mostly reconstruct the chapter, great, if not, I go back and figure out what was where and why it was there. (It might be worthwhile to always go back and see what you missed / got wrong, but that would probably get close to doubling the necessary reading time.)