President Obama on Sunday said his preparation for the next debate with GOP challenger Mitt Romney is proceeding nicely.

“It is going great” Obama told a reporter after he brought pizza to workers at a Williamsburg, Va. campaign office, according to a pool report.

Obama arrived at a resort in Williamsburg Saturday afternoon for three days of debate preparation as the campaign seeks to prevent another sub-par showing against Romney.

Obama was widely seen as losing badly in his Oct. 3 debate against Mitt Romney, a battle that preceded a boost in Romney’s poll numbers.

But campaign advisers said viewers should expect a more aggressive, energetic performance from the president when Obama and Romney meet for their second debate Tuesday in Hempstead, New York.

Sen. John KerryJohn Forbes KerryBringing the American election experience to Democratic Republic of the Congo Some Dems sizzle, others see their stock fall on road to 2020 The Hill's 12:30 Report MORE (D-Mass.), who is playing the role of Romney at Obama’s practice sessions, has been seen around the resort.

Reports said that former White House communications director Anita Dunn had been playing the role of CNN political reporter Candy Crowley, who will be the moderator of the second debate.

On Sunday Obama took a break to visit the campaign office in Williamsburg, bring pizzas, and made a few phone calls to supporters himself.

Obama’s comments on his debate prep were a sharp contrast with his remarks before the first debate in Denver, Colo.  During a meeting with campaign workers in Las Vegas two days before the first face-off, Obama had jokingly called the preparation work “a drag.” “They're making me do my homework,” he had said.

On Sunday, senior Obama campaign adviser David Axelrod said the president was making “adjustments” and said supporters should expect a more “aggressive” Obama.

Senior Romney adviser Ed Gillespie, however, countered that even if the president “changes his style ... he can’t change his record and he can’t change his policies.”

Romney is at his Boston-area home with his prep partner Sen. Rob PortmanRobert (Rob) Jones PortmanWeek ahead in tech: Debate over online sex trafficking bill heats up 'Hillbilly Elegy' author won't run for Senate Brown, Portman urge Trump administration to move quickly on a steel decision MORE (R-Ohio) and longtime aide Peter Flaherty, whom reports said would play moderator in mock debates.