Push
When you come up with an idea that is genuinely compelling, it isn’t hard to get people interested and excited; after all, most people want to be a part of something big and aren’t intimidated by ambitious thinking.
It’s when there is call to action that slowdown begins.
I do not think that this is a factor of lack of enthusiasm or of belief. It certainly is not lack of integrity. And you should never take it as something that you are not doing a good job with.
It’s just that no one else has made your idea their only avocation, their primary focus like you have. It’s understandable; it was your idea to start with! They are excited to join you, but you are still the one that should be pushing it.
Pushing your idea requires pushing them! Do not lose faith; do not mistake their passiveness; do not give up!
Entrepreneurship is about pushing everything and everyone to push your ideas through. Push! You will succeed.