Miami Dolphins quarterback Tua Tagovailoa will take a small step Wednesday toward returning to football but has been ruled out for a second straight week because of a concussion.

The Dolphins plan to start rookie Skylar Thompson at quarterback on Sunday against the Minnesota Vikings, coach Mike McDaniel said.

"I can say with certainty that he's not going to be playing this Sunday," McDaniel said of Tagovailoa, who has been in concussion protocol since Sept. 29.

McDaniel confirmed that Tagovailoa will return to practice in a limited capacity Wednesday for the first time since entering the concussion protocol in Week 4.

"We just miss his personality. He's a guy that we rely on," McDaniel said, adding that Tagovailoa will take things slowly, working out and throwing individually.

Dolphins quarterback Teddy Bridgewater, who also is in the concussion protocol after being removed from last Sunday's 40-17 loss to the New York Jets on Miami's first offensive play, also will be limited in practice as he progresses through the protocol.

McDaniel said that even if Bridgewater is active, the Dolphins plan to start the rookie Thompson, who relieved Bridgewater last Sunday.

The Associated Press contributed to this report.