Waddock feels he needs to freshen things up after a 4-1 defeat at relegation rivals Scunthorpe on Saturday saw Wanderers slip back to the bottom of the table.
"We have two home games now and we have to go into them in the right frame of mind," Waddock told the club's official website. "You want performances to be consistent but Saturday was very low so we will have to see what turns up on Tuesday evening.
"I will have to take a look at the team and try to freshen it up. I keep going back to the drawing board and I will have to do it again."
Defenders Danny Foster and Leon Johnson, midfielders Gareth Ainsworth and Matt Bloomfield and striker Ben Strevens are options for Waddock.
Stuart Beavon missed out at Glanford Park after sustaining a groin injury in training towards the end of last week and the forward remains a doubt.