Ian Holloway has said he will freshen his side up when they face Cardiff at The New Den today.
If Holloway had a bigger squad he'd change upto six players after making the mistake earlier in the season of not changing things enough.
"One thing I've got to look at is the freshness of the team," Holloway said
"After we went up to Sheffield Wednesday earlier this season, we lost 1-0 to Rotherham on the Saturday and produced a below-par performance.
"I didn't change enough people and that was wrong because people were tired. I won't do that again because people are physically and mentally tired.
"We had someone pick up an injury yesterday while we were walking through things, which is very annoying.
"When you have a massive journey on a Tuesday and you all get back at half past three in the morning, this is what happens.
"If I had a couple more players available, I would probably make six changes. Making these decisions is what I get paid for. It will either work or it won't."
Millwall v Cardiff City
Saturday 12:15pm
Live on Sky