I sure hope it doesn't come to that
It IS possible that they won't fight and your young boy will stay subordinate, but it's in the nature of male chickens (and not just chickens either) to become the one who passes on their genes.
If it were me, I'd leave them alone and not mess about with...
Your young cockerel is being super-smart. He keeps out of the way, doesn't bother anyone, probably sneaks a fumble with the girls when no-one is looking. He knows better than to out-rooster your rooster because at the moment he knows he'd lose a fight.
Fiddling with who you think should be the...