Planning Your Publishing: Schedule for Success
Everyone's publishing timeline works differently, but when you're preparing to launch your book, it's a good idea to look ahead. I recommend that you start planning to publish when you're near the end of your first solid draft, but some writers like to act sooner and set up a timeline before they even start writing.
Remember: there aren't any rules for this. When you schedule your publishing agenda, stick to what works for you, and modify it as needed.