It depends how many pages are in a chapter. If there are about 4u20137 pages in a chapter, you could probably read 3u20137 chapters in the morning, and 3u20137 later. What I do when I read a big book (I had to read 37 chapters in 1 week) was I read about 5 chapters a day, but I would put some nice relaxing brain music on. I had to take notes as well, so I would read 2 chapters, then take few 5 minute break. When you take a break don't play a game or anything, just sit and relax. Then, I would read 2 more chapters, take a break. Putting a timer on your phone is a good idea! I did it everyday for a week and it worked! Not saying you have to chase you said in a day but still, a strategy!