Consider writing your blurb FIRST!
https://7figurefiction.substack.com/p/why-guiding-blurbs-are-a-chaotic I consider it my north star. Am I fullfilling the promise I made in the blurb? Have I gone too far astray? How can I bring it back on point? Adjust the hook here or there and go. Writing the blurb first makes it so much easier!