Hi, I hear your frustration, what you need is 3-4 pieces of materials to revise from. Hurst Review, I can not stress that enough, you need to know your basic content, then you can pretty much talk your way through any question. LaCharity for P/D/A, excellent book, Saunders for more in depth reading after using Hurst and you may need to clarify or read more extensively.
You can not rush the process, you can not read a couple of chapters, then say this is not working, you have to give the resource teachings a chance to work. Follow the guidelines and you will do great.
Be robust in your revising and I am sure you will be successful. There are a lot of great tips on this site, as far as study tips, you simply have to find one that works best for you.
All the best, you can do, I intend to next weekend.........we got this!!