You must have read some of my long paragraph answers on here. I catch myself being redundant a lot.
I started to break up my paragraphs to make it easier to read. (I hope).
As far as a book goes I believe you must have had good reason to start it.
Take a short break from it and see if it calls you back.
I havent started writing any books at this point but I might in the future.
Thanks for the question as it may have planted a seed.
Good luck on your book.