Sometimes you have to make a leap.
For yourself, for the other people involved, for the future of the project.
Once you decide this, then you must try and time it correctly. The same leap made too early or too late won’t work.
And once you decide on when, then you must plan, think, work hard to give yourself the best chance of succeeding with your leap.
And it still mightn’t come off.
But it might.