Doubling down on a bad call to save face just means you lose twice with everyone watching.

Defending a decision you no longer believe in costs more than admitting it. The first mistake was a mistake, which people forgive quickly. The second one is a choice made in front of everyone, with all the information already on the table. What you were trying to protect gets damaged by the protecting.

If you are arguing for something mainly because you are the one who suggested it, stop and say so. Changing course early is almost free. The longer you wait, the more you have to explain.