The wide receiver has been struggling with a shin injury since the AFC South side's defeat to the Baltimore Ravens last month.
The head coach told reporters: "You know, it's kind of like it was last week. He's just very sore from coming off that Baltimore injury. He's pushing through it for us. It's just a tough thing to work through.
"We're basically giving him Wednesdays and Thursdays, getting him going again on Fridays and trying to get to game day. But it's been very frustrating for him. We're doing everything we can to get him back to full strength, so it's been tough.
"He did move around a little bit today. He took a little bit of the jogthrough, a little bit of the walkthrough. But we will see more tomorrow."
Johnson has 407 receiving yards so far this season.