Break up each sci section into equal parts. The orgo has fifteen chapters so do three a day for five days. Read, summarize each chapter on a piece of paper,make flashcards. Repeat till done. Reread everything. Divide the chem up into equal parts. Read, summarize each chapter, repeat till done. Reread everything. Divide the Bio into equal parts. Read, summarize each chapter, supplement the plants,taxo,evolution,origins of life,ecology,animal behavior with Schaums, repeat till done. Reread. Go through the math, take notes of concepts you have issues with and write formulas down. Start taking practice tests. Itemize what you are getting wrong by subject and go back to your books and retake notes on what you get wrong(you should be developing quite the stack of notes by now,haha). A few weeks before your test, retake all notes(this helps me to hammer things into my head-maybe itll help you?). Good luck.