Great organizations, ideas, and programs exist because they had time to fail.
Sometimes the leaders failed elsewhere dozens of times before starting this new organization. Other times the team had enough runway that they should fail a few times before crunch time.
Either way, no one is going to get it right the first time. You need time to iterate, time to improve and time to fail.
That means that the deadline can’t be the deadline. Small steps are the only way to conquer a big goal. Ship sooner. Don’t build one prototype in a month. Build one prototype every week so by the end of the month you’ve failed enough to succeed.