There is no such thing as "just do it" when dealing with an epic battle for control of the most powerful and most wealthy nation in human history. Massive forces have aligned in battle. Both sides are infiltrated. both sides have experienced setbacks, screwups, betrayal and failure. "Just do it" implies that he controls the decisions and actions of a massive number of people. Some of these people will be aware of a small sliver of the plan, some won't know anything at all.

There's no such thing as "If Trump acts....." Figure it out, he is acting. He's already a hero. He's already risked EVERYTHING for the Republic. Maybe he succeeds or maybe he fails, but there is no question that he has already acted.