GREEN BAY -

Two seasons ago, when the Green Bay Packers offense also sputtered out of the gate, Aaron Rodgers made the famous declaration of "R-E-L-A-X."

Late Sunday night, after Rodgers was central to Green Bay's inept performance on offense in its 17-14 loss at the Minnesota Vikings, the veteran quarterback tried to calm the early-season concerns out of Packers Nation.

"We're not going to overreact," Rodgers said. "It's been (only) two weeks."

Though Rodgers and others feel there's no need to hit the panic button, head coach Mike McCarthy acknowledged Monday that improvement must start in earnest as the Packers try to avoid the same 1-2 start encountered by the 2014 team.

Green Bay hosts another NFC North rival, the Detroit Lions, in its home opener Sunday.

McCarthy said there's no excuse for the sloppy play that did in the Packers as the first regular-season opponent for Minnesota in its new U.S. Bank Stadium.

"Mindset is important, so we're going to stay on the balls of our feet and punch like hell," McCarthy said.

He wasn't happy about the production, or lack thereof, by the offense for which he calls the plays.

A week removed from a host of communication issues in Green Bay's narrow season-opening win at the Jacksonville Jaguars, the Packers allowed the Vikings to assume the outright division lead at 2-0 with a multitude of errors on the offensive side.

Rodgers was sacked five times, he committed two costly turnovers late in the game, and the Packers put the football on the indoor turf four times.

Green Bay's out-of-sorts offense amassed just 263 yards, averaging only 4.1 yards per play.

"Offensively, we've got a lot of work to do," veteran guard T.J. Lang said. "We've got to get better, and we've got to get better now."

Incredibly, the Packers had a couple golden chances to erase the Vikings' tenuous 17-14 lead and possibly go ahead in the fourth quarter. Yet, Rodgers gave up the football on a strip-sack by Brian Robison, followed in the next Green Bay series by a poorly thrown pass to Davante Adams that was intercepted by Trae Waynes to all but seal the victory.

"We've been not quite finding our rhythm yet, but we've got some guys working in that haven't worked together a whole lot," said Rodgers, who went just 20-of-36 for 213 yards Sunday. "So, we're going to trust the process and believe we can get this thing turned around.

"I don't think we're that far off," he added, saying about the would-be overreaction, "I don't think this is anything to get super crazy about."

After all, right after imploring the skeptics to relax early in the 2014 season, Rodgers threw for 13 touchdowns with no interceptions as the Packers rattled off four straight wins to get to 5-2.