After rookie Johnny Cueto's rough 1 2/3-inning, seven-run performance in the Reds' 7-2 loss to the Cardinals on Tuesday, the Reds readjusted the rotation again on Wednesday to give the 22-year-old extra rest.

Bronson Arroyo, who had been pushed back, will move up and take Cueto's spot on Sunday in Atlanta. Cueto switched places with Arroyo and will start on Tuesday at home against the Cubs.

Before the season, manager Dusty Baker talked with general manager Walt Jocketty about having former pitcher -- and current instructor -- Mario Soto visit the team once a month. The purpose was for Soto to work with the rotation's young Dominican pitchers, Cueto and Edinson Volquez.

Soto's advice could be the right prescription to fix what's ailed Cueto on the mound.

"I think maybe the time is now for Mario to come in and just talk to him," Baker said. "[Pitching coach] Dick [Pole] is on the case and on the job, big time. But Mario kind of helped raise the young man and helped teach him that changeup."

Soto is the director of the Reds' Dominican operations and worked with the organization's pitchers at Spring Training. Cueto is a product of the organization's Dominican academy. There's no word on when Soto will be able to come in.

With the scheduled off-day on Thursday, the Reds had already reworked the rotation on Tuesday so they could keep Cueto, Volquez and Aaron Harang on regular rest. The change will give Cueto six days of rest, two more than usual.

Following a hot start, Cueto has slipped to 1-3 with a 5.40 ERA in his six starts. The change isn't just based on Tuesday's game, which was Cueto's worst outing. The right-hander has been hit especially hard the past two outings.

"It gives him a little more time and also to let him collect his thoughts," Baker said. "He'll have a couple of bullpen sessions versus maybe just one. It's a matter of location now. He's getting his changeup up. It seemed like last night he lost a little confidence in his slider."