City are aiming for four trophies, although their bid to match the ‘Invicibles’ ended when they lose to Liverpool earlier this month.
Stones admitted that Pep Guardiola also rest his players as he wants to win every competition.
“We obviously wanted that [to go undefeated in the league], and I’m sure every team does, but it’s such a difficult thing to do,” the England international told UK newspapers.
“The four competitions we’re still in, the number of games compared to some other teams, you know it takes a toll, no matter how much you rotate the squad.
“I think sometimes you’ve got to hold your hands up and say, ‘we gave it our best shot’, which we did. I think we’ve just got to move on.”
“For me personally it wasn’t an added pressure. I think you kind of want to make it happen, it’s not so much a pressure, but on the other hand you could say it’s a bit of pressure that’s been released from us,” he said.
“Some people might’ve been thinking it: could we go unbeaten and when is it going to happen?
“That could’ve been going through people’s heads. From what I know it wasn’t, it’s one of those things where we’ve got to take it, re-evaluate, look at the game, look at positives, negatives, everything about it and go about business like we have been.”