The Cardinals are currently on a four-game winning streak which has seen them haul themselves back into playoff contention in the NFC West, and they have a crucial game with the Philadelphia Eagles this Sunday.
Fitzgerald believes that much of their recent form is the result of the team adapting to what first-year coach Bruce Arians wants from them.
"Any offense takes a little bit of time to become adjusted to it and figure out the nuances of it," he told the club's official website.
"It took a little while, but I think guys are really comfortable now with what we're doing and how to attack it and what we're looking for; identifying coverages and blitzes and things like that.
"I think we do a really good job. We're going to have to do a really good job this week. We have to try to keep the ball in our possession as much as possible to keep the Philly offense off the field."
Fitzgerald has 606 yards receiving and eight touchdowns to his name so far this term.