IRVING, Texas -- Dallas Cowboys quarterback Tony Romo took part in Wednesday morning's walk-through, but he is following his normal practice schedule of not taking part in Wednesday's practice before being a full-go Thursday and Friday.

Coach Jason Garrett said the Cowboys wanted to keep Romo on the routine he has had for the past two seasons to preserve and strengthen his back. It's not related to the broken collarbone that kept him out for the past seven games.

But Romo will start Sunday against the Miami Dolphins, and Garrett does not want him to feel like he has to carry the day.

“I think you always want your players to be the best versions of themselves,” Garrett said. “Tony’s going to prepare this week and get ready to play at the highest level. That really is what our expectation is for everybody. We certainly don’t want him to feel like he has to come in and save the day. He just needs to play quarterback for our football team. He’s done that well for us in the past. We anticipate him doing that on Sunday.”

The Cowboys' offense has floundered without Romo. In three of the seven games the Cowboys failed to score a touchdown. Brandon Weeden and Matt Cassel had three games with fewer than 200 yards passing. The Cowboys had three games in which they had 18 or fewer first downs. In five of the seven games the Cowboys had a third-down conversion rate of 31 percent or worse.

So maybe they need Romo to save the day, but Garrett disagreed.

“Do your job. You’re 1/11th of the offense. You’re 1/11th of the defense. You’re 1/11th of the special teams unit that you’re on. Do your job. Know your job. Do your job. Be dependable. Be accountable. All those things,” Garrett said. “Those are messages we’re constantly trying to instill in our guys. When you have a great competitive spirit sometimes you want to do more. And that’s a good thing for your team. You want to have guys like that but at the same time you got to go back and do what you’re supposed to do and Tony really understands that balance.”