Read PMP Exam Prep and PMBoK in detail once and revise them twice

Here's the approach I used:

• First reading: During the first reading of PMP Exam Prep, I read through the whole book and I highlighted only those points that I found were very challenging to remember. There were some interesting points that I did not highlight because I felt that I understand those points well and would be able to remember them. I took the practice test at the end of each chapter and I highlighted questions which I got wrong. I also highlighted some of the questions which I felt were challenging to answer although I had answered them correctly.
• First revision (second reading): During the second reading, I again read through the whole book without much of skipping of sections. I highlighted additional points that I did not remember well and I was surprised to have not highlighted them during the first reading. During the second reading, I did not read all the questions in practice test at the end of the chapters. Instead, I only focused on the highlighted questions.
• Second revision (third reading): During the third reading, I focused on the highlighted points thus reducing the time required for revising topics in the book. I also answered the highlighted questions which are part of the practice tests in each chapter. The second revision (third reading) was done a few days before the exam.

I used the same approach for PMBoK as well. There were three rounds of reading in total which helped me remember the topics better as compared to reading twice.