What is the promise of your novel?
Are you writing forward with that promise in mind?
As you go along, if an idea comes to you about something that should have showed up in earlier pages, write yourself a note–right then and there–describing what should happen. Highlight it. Then keep moving forward. You’ll easily find what you’re looking for later.
Another hint- If you are reading the previous chapter to get you into your novel (which I think is a good idea, because it helps you settle back into this novel’s specific voice) don’t count that time as your hour. Your hour begins when you start new words.
Throwing Up Words 