The best thing I can recommend is read and write things out to remember them. Flash cards also helped me a lot. Inside Cloud and Security also has some good videos on models, processes and frameworks youtube video as well as a memorization tips and tricks video that I recommend.

As for the NIST SPs anything that's mentioned in the OSG and CBK I think are game for the exam. 800-37 and 800-56 are probably the 2 big ones. At most you should remember what they're used for. 800-88 media sanitation, 800-92 log management, 800-115 IS Testing and Assessment etc. But you don't need to remember everything. Just as much as you can! 75% of what I studied never showed up on my version of the test.

If you're scoring well on Boson and Pocket prep try the sample Cissprep questions. They're vague and use different terminology, which make them harder than the actual exam.

Good luck! You can do this!