Rangers have been consigned to the playoffs after Leicester and Burnley secured automatic promotion.
They face a London derby against former QPR manager Ian Holloway's Millwall on Saturday and Redknapp is after another morale-boosting win.
"We've got the playoffs to look forward to now," he said. "We'd have loved to go up as the top two but congratulations to Leicester and Burnley, who have done fantastic this year.
"We've got to keep going. It's important that we keep playing well and picking up points.
"We've got Millwall on the weekend which is another big game. Ollie's coming back, he's done excellently there so it will be an interesting game. We've got to be ready for that game."