I finished editing chapter 1, reaching the required word count.
I am now in the second section of chapter 2. I am setting a pace of 2 to 2 1/2 days per chapter. At that rate it will be done in a month.
Revision is torture! Almost as much as writing the first draft. It is getting easier as I settle into the process, though. I just handle the work one chapter - one section - one page - one paragrpah - one sentence at a time. And slowly I inch forward through the book.