Generally you wait until you absolutely need it. Otherwise, if you don't get two the first time, it takes pressure off the opposing offense on the next possession.
?? They need a 2p conversion, then or now. Best to know NOW whether you need to get the ball back twice and plan accordingly. But it's academic. Finally.
Are you kidding me???? A T.O. now????? WTF????? DOes Bowles think you have to use all your TOs before the game ends?