John Fleck acknowledged Saturday's draw against Millwall was a setback.
Reflecting on an action-packed encounter at Bramall Lane, which ended with Jake Cooper cancelling out Gary Madine's opener, United's Scottish midfielder felt the Blades should have managed the lead better, despite having John Egan dismissed, following injuries to Chris Basham and Billy Sharp.
He remarked: "I thought we started OK, then it turned into a scruffy game and it was always going to be tight.
"We did well to get ourselves in front, but then we became sloppy in possession and it's just one of those days.
"We've got to move on as quickly as possible though, we're disappointed with the result, but we can't change it now."
Fleck added: "We weren't composed enough on the ball going forward. We ended up getting pinned back because we were giving the ball away and they kept just getting balls into our box and that's what they are good at.
"We're used to playing a certain way, but in the last few games we've not been at our best, saying that there is still a way to go."