"Maybe I need to [change my game], but I can't get myself to do it," said Roethlisberger, who has been sacked 450 times during his career. "When I feel healthy and ready to go, I'll feel ready to go. ... I've gone through this before; my body will tell me best how I'll feel."
Roethlisberger was limited in practice Wednesday as he battles back from surgery to repair a torn meniscus in his left knee on Oct. 17, and he hopes to play against the Baltimore Ravens on Sunday.
He ran with the first-team unit and dropped back to throw several times.
Roethlisberger, 34, missed four games with a sprained MCL last year. He said that controlling the knee swelling will be important this week, as well as "being able to feel comfortable out there, protect myself."
"He looked like himself. In a sense, it's still probably a pain thing," guard Ramon Foster said.
Backup Landry Jones is available to start if necessary. Coach Mike Tomlin, when asked whether Roethlisberger could dress but not start, said all options are on the table this week with him and other Steelers players.
Roethlisberger came off the bench in Week 10 last season to throw for 379 yards in a 30-9 win over the Cleveland Browns.
The veteran quarterback said he'll simply "tell [Tomlin] how I feel after today and go from there."
Roethlisberger called the torn meniscus suffered in Week 6 against Miami a "freaky" injury.
"Maybe I'm just getting too old," he joked.
With 13 years in the league, Roethlisberger is the second-longest-tenured NFL player in the Steelers' locker room behind linebacker James Harrison (14).