'PoP' book marketer.

We put out a book called 'Power of Play' last year. It's sold well using just an Instagram channel, and some respected retailers. It was a Finalist in the Business Book Awards last week, and there are discussions of a TV version. After a good run and some nice publicity sales have slowed, and we need an intelligent new campaign through the socials, and I'd love to find someone well-versed in discount / sales campaigns through Amazon etc, to raise the profile again. Ideally, a knowledge of the book world would help.. but it's not essential.