They beat Doncaster on Saturday, and Barlow reckons a top six finish is still within reach.
He said: "It would need a phenomenal run to make the play-offs. But five games without defeat gives us a foundation and we just want to keep improving and finish the season as high as we can.
"It was disappointing not to keep a clean sheet, but I was absolutely delighted to beat Doncaster because they are one of the teams I really rate."