You don’t need the loudest voice to change the plan. You need the clearest reason.

Volume competes with other volume, and the room eventually stops hearing any of it. A clear reason does something different, because it gives people a way to agree with you without losing anything. There is a stated basis now rather than a contest of insistence, and groups follow reasons more often than they follow force.

Before you push for a change, compress your case into one sentence anybody could repeat. Then say it once, in a normal voice, and let it sit. If the reason is good, somebody else will pick it up, and it carries further coming from them.