Carr admits they've taken the foot off the gas since winning the Carling Cup.
He said: "The Carling Cup was a bonus but only if we stay in the Premier League can we say it's been a great season. We'll have to do it. There are only four games left now, so we have to make a final push.
"It's been brilliant, but it'll be the biggest disappointment of my career if we go down. I don't want to be involved with a team that gets relegated at this stage of my career."