It takes however long it takes. I don't see the reason for the hand wringing over this.
There comes a point when you realize that there's really nothing you can do. All your worry or guessing doesn't change the situation.
That's where I am. I hate he got hurt. But he's hurt.
That's why the team drafts and develops players. In case one goes down, another steps in.
We still have Romo. We still have a rock-solid offensive line. We still have backs who can move the chains. The coaches were raving about D. Street in camp. Okay, here's where we see if they were blowing smoke.
Other players simply are going to have to step up their game.