@_SugaRush_ Aww! I love your Silver Lining series so much! But, I understand if you're ready to move on.
What I've done to copy my books into docs is to go to each page/chapter of the book and click on "edit page" (or whatever it says...but the button that allows you to edit/make changes to your text). It'll then allow you to copy the whole page/chapter from there and you can then paste it into a doc.
If you do leave, good luck in the future! You're a talented writer who elicits great emotions from your readers.