Need some ideas[HELP, stressed]

I’m kinda freaking out, the test is in exactly 21 days. I own Pwn The Sat book, Erica CR book and Erica Writing book. I’ve finished the writing book and I’m more than half way through with the CR book, but I haven’t started the Math book. I’m not sure what to do / the CR book is pretty dense and lengthy plus on top of that it has BB questions. What should I do? Should I take daily CR/Writing sections and start working on the Math book? I need some advice, thanks! My goal score is at least a 2000.

Maybe try to do one math, and one CR or Writing section per day if you have time.