A lot of writer's I've talked to say they're worried about pushing their book on social media because they don't want to come across as annoying.
I'm gonna drop a little truth bomb here—whatever content you make is going to be a drop in the bucket of the content people are consuming.
Seriously, people see hundreds (if not thousands) of posts every day as they're scrolling mindlessly. Your daily post about your book is just going to be one of those. Even if you're posting every day, there's so much content out there that there's no way you can actually be annoying.
So share your book often! Make your posts fun and show your personality, but don't worry about being annoying! It's nearly impossible!