The Demons have won just one match this season, and face the in-form Swans in Canberra.
"We need to ensure that the players who are in good form at Sandringham are being rewarded," Bailey said.
He also said that while the side was not winning games players still needed to perform and “play at a level that was acceptable to their teammates and the club.”
While Bailey said there would be changes this week, he was not forthcoming with any specific details.
Bailey agreed that the Swans would provide a huge challenge for his team, but said that the Bulldogs had showed the way to beat them back in round seven.
"They are in excellent form. They play very strong contested footy, and we've been trying to focus in on that for most of the year," he said.
"We are going to come up against a very good contested-possession team in Canberra.
"It's going to be a real good challenge for our guys to play against one of the best clubs.
"We've spent a lot of time watching the tape, watching the last three or four Sydney games, but you can argue that the Bulldogs game against them was very good.
"They moved the ball particularly well, the Dogs, and they showed that being competitive, but also being ferocious in the tackle and at the contest is also desirable, and if you play at that level for long enough, you can beat Sydney."
