Bielsa said that he will only celebrate the eventual promotion but at the moment he is focusing on the job at hand.
"I can not enjoy this," Bielsa said. "What you feel just is that you are taking a step forward. The only thing I can enjoy is the last objective if we get it.
"The match was very close, very narrow, few chances. When the match progressed our possibilities were growing and in the last 30 minutes I think we deserved to score and to make the difference."
Championship leaders Leeds are now three points ahead of second-placed West Brom, and six clear of in-form Brentford, with games against Barnsley, Derby and Charlton to come.
Meanwhile, Stoke eased their relegation worries with a comfortable 2-0 win over fellow strugglers Birmingham. Danny Batth and Sam Clucas both scored during an impressive first half as the Potters climbed above the Blues in the table.
James McClean could have got his name on the scoresheet but hit the woodwork. The win gives Stoke back-to-back home victories and gives them a four-point cushion on safety.