Miller said: "We were very disappointed with our performance at Bolton and we didn't play particularly well. We have to look at ourselves and we need to get ready for our next game against West Bromwich Albion.
"The international break didn't come at a good time as we would have liked to keep the players and work with them but it wasn't to be. There was the double header of World Cup qualifying games and it's not easy having two games in the space of five days. I've had experience of that when I was a coach with Scotland.
"Then the players come back and it's straight into two big games with West Brom then the Champions League game with Monaco."