After a club-record 10 straight league wins, they have drawn their last two.
"We're in a fantastic position - but anything can happen in a week of football, there's nine points to play for," said Wilder.
"Other teams have got to go on great runs to catch us and we've got to have a dip, but I don't see it."
Wilder told BBC Radio Northampton: "I'm not seeing any nervousness or apprehension in our play - we're going for it and enjoying this situation.
"Will we win the next 12 games? I think it's going to be a real difficult task because to win three games on the bounce is tough. When you're talking about the exposure we get, we should do, because it's a special run, breaking club records."
The Cobblers travel to play-off-chasing Carlisle on Saturday, after draws against Hartlepool and AFC Wimbledon.
And Wilder says that, because teams below them all play each other, they will struggle to put together a run of wins.
"Look at some of the games that are coming up - Accrington are going to Wimbledon on Saturday, Portsmouth are playing Accrington next week, Oxford v Plymouth - they're all going to cut their own throats," he said.
"I don't see a team sticking 10 wins on the bounce again between now and the end of the season.
"We've got Cambridge coming up who fancy getting into the play-offs, Carlisle on Saturday, and even down to the likes of Luton - there's going to be some tough games coming up for everybody."
Northampton Town manager Chris Wilder says he cannot see his side faltering as they sit 11 points clear at the top of the League Two table.