The Bantams have seen their promotion bid come off the rails in recent weeks with a run of eight games without victory that has seen them slip to ninth.
With three games remaining, against Dagenham, Rotherham and Chesterfield, Bullock wants at least two wins to give his side a chance of extending their season.
"If we're going to get in the play-offs, these next three games are a mini-league against decent teams," the midfielder told the Telegraph & Argus.
"If we can take the pressure and get the wins, it will build confidence. If we can't then we don't deserve to be in there, it's as simple as that.
"We want to get to Wembley. We want to get promoted. We want a day out that we can remember for the rest of our lives. That should be a massive incentive."