Is the chapter on Atmoshperic Pressure 22 pages, or are your notes 22 pages? If it's the later I'd say you'd need to focus less on the details.
I think you can afford to not type up your notes, in my experience typing things up puts me in 'autopilot' and it doesn't help me take it in any more. It's nice to have the notes tidy... But as you say the more you drag it out, the less motivation you will have!
What I did is go through the manuals, making notes on big picture stuff. Then just hit the QB, referring back to the manuals to help you. Don't dwell on the manuals, there's too much to learn.
Good luck!