You won't get through it "properly" in two months. It really is mind-changing, and that takes time. You must do the exercises - pretty much all of them - because that's where your thinking gets changed. Reading the text sets you up for it, but that's like reading about weight-training. It has very little effect unless you actually do it.

Without knowing more about what you already do or already know, I can't advise paying particular attention to one thing or another, but simply to repeat - the benefit is in the exercises. The text reads clearly and simply, but the exercises are where you put in your part of the effort.

EDIT: corrected typos.