Sourav Ganguly admitted the form of young batsmen Yuvraj Singh and Virender Sehwag remain a worry with a week to go before they meet arch-rivals Pakistan.
The duo struggled in the 98-run victory over Kenya - Sehwag was caught off a poor shot for 17 and Yuvraj made nine.
But India have a warm-up match against an ECB XI on Thursday before taking on Pakistan at Edgbaston.
"We need to get them into form because they're important players - they score at such a fast rate," said Ganguly.
"I like the way Viru [Sehwag] applied himself for a time. He probably could have avoided the shot but we hope he fires in the warm-up game."
However, Ganguly was buoyed by impressive showings from VVS Laxman and Mohammad Kaif, as well as his own 90, the same score as he made against England last weekend.
"Before the Pakistan game we've got one more game and I hope we hit even better form in that one," he continued.
"It's unfortunate to miss two hundreds in one week but that's the way it is in one-day cricket - you sometimes try to accelerate."
Ganguly was worried at the 49 extras conceded but his bowlers in blustery conditions.
But he reserved praise for spinner Harbhajan Singh, who put a long-term finger injury behind him with figures of 3-33 in 10 overs.
"He's bowling outstandingly - in the last three games he's bowled superbly," Ganguly added.
"That's the way he bowled before he got injured. Obviously his finger was creating a problem and now that's fixed.