I have no idea where to ask this question, so I hope it's okay here. I'm planning to write a duology, and this might seem like a silly question, but I was wondering if it's actually recommended to write one book immediately after the other. Obviously, if they ever got published, I would publish them one after another and not release a completely unrelated story in between. But, while my first draft of my first book "composts" and I turn my attention to planning another, should I really be planning the second? Or should I keep my thoughts away from it entirely and write something else until I go back and look at the first draft of Book 1 again?