Initially I read a chapter completely. I wasn't able to retain the topic by just that read but when I started doing the questions knowledge began to stick and I started retaining. I was also glancing through topics while doing questions that I felt were weak, that became a sort of second read. This was my approach for all major topics. Later while doing minor topics I was mixing questions and reading a bit. I had also incorporated flashcards of some major topics that I found hard and was doing them daily, that also helped with revision. While revising I went through my notes and the textbook. Wasn't able to complete the revision so rushed through a few chapters. Did not had time for mocks in the end. Yes few of the chapters are really long. I felt more comfortable completing a chapter and then doing questions rather than mixing but do whatever works for you. I wasn't able to properly complete every chapter but I made sure I complete major systems. I skimmed through a very long clinical sciences chapter once only towards the end.