I took 3 full weeks to read through/highlight/make notes of the entire Kaplan book. Then I made flashcards for every single chapter of the bio in Kaplan... it took me exactly one week to do that (~7 hours on weekends, ~4 hours during the week.) That doesn't include studying them though!
Now I'm on to making notecards for chem, which is taking less time than bio because the topics seem to be more broad. I am generally getting through 1 chem chapter per hour, where it seemed to take 2 hours for every chapter in bio. I also have a weak background though, so you may need less time.