A novel has a lot of moving parts. When you factor in research, articles saved with Web Clipper, and random jottings about who did what to whom, you'll probably find you have a lot of notes for your writing project. Consider adding a couple more to keep it all straight: a dashboard where you can manage the whole thing, and a checklist for bringing your completed opus to the world.
Story beats template. Adapted from the world of screenwriting, this popular method replaces the concept of acts with a set of milestones that commonly appear in many kinds of stories. Hitting these "beats" gives your story a rhythm while leaving the details open to your imagination.