KDP only makes it possible for this option on eBooks, and you'll edit or update your manuscript till 72 hrs before your book’s release day. When you established your .kpf file using Kindle Create, you are able to skip this stage, as you'll have already got previewed your eBook. In https://maplepublishers.com/blog/how-can-you-become-a-thriving-author-while-book-self-publishing-london/