"A month ago we were flying high, but since then we've struggled," Lampard told BBC Sport. "It's a challenge even a man down.
"Maybe a bit [confidence affecting his players], that's normal in football, but every team are having phases of form. Within that you get individuals short of form. We've got talent at the top end and it's my job to sort that out.
"Perfection is not an easy thing to get. I won't say I was blown away with the performance. There were lots of bits I was happy with, but we won't get too ahead of ourselves."
