The Robins defeated in-form Leicester last weekend to move clear of the relegation zone, and Millen has urged his players to give themselves some breathing space by making it successive victories against the Blades on Saturday.
"It's a nice feeling to be out of the relegation situation," said Millen. "More importantly, beating Leicester has given us a chance to attain that Holy Grail of back-to-back wins.
"That is a massive thing in this league, if you can achieve it, and the fixture list has given us another home game and an opportunity to get another three points.
"If we can do that, then we will bring a lot of teams back to us.
"It's all about targets. We hauled ourselves off the bottom of the table and then we got out of the bottom three. Now we have to set our sights on catching the next group of teams that are just above us."
Source: PA
Source: PA