The Waratahs are looking to avoid complacency as they prepare for Moana Pasifika, looking to shutdown former teammate Sekope Kepu.
The club are flying high after stunning 10-time champions the Crusaders 24-21 in Sydney last Saturday but Coleman has cautioned his finals-bound charges against getting ahead of themselves.
The back-slapping stopped as soon as the Tahs returned to training on Monday, with Coleman intent on ensuring there's no let-down in Auckland.
"I reckon this is a bigger challenge," the wily mentor said on Thursday.
"The emotional get up for the Crusaders, I found, was pretty easy.
"Getting that home crowd, what we're trying to build at home, trying to build that fan engagement, that Waratah brand - that's easy to sell that.
"I've got a feeling there'll be a big crowd of Pasifika fans at Mt Smart Stadium so we've got to keep those fans quiet."
The best way to keep them quiet, Coleman believes, is by keeping their team a long way away from the NSW try line.
"The closer they get to your try line, the harder they run," he said.
"So we've got to play good field position and keep the emotional energy away from them."
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In order to achieve this, hooker Dave Porecki pointed to stopping the influence of Pasifika captain Sekope Kepu at set-piece time.
Kepy played 141 games for the Waratahs and 110 for Australia, with Porecki confident he will be out to "bully" the NSW scrum at Mt Smart Stadium.
"If he gets dominance early, he is pretty much impossible to stop," Porecki said, who played with him at London Irish.
"He's a very strong tight-head scrummager so if you nullify him early, you can discourage him from being so dominant throughout the game.
"He's too experienced for someone like me to rattle him...I know what makes him tick. I think that's a little bit of an advantage for us."
