IAN Holloway says Millwall have to improve their defensive organisation ahead of Blackburn Rovers' visit to The Den on Saturday.
The Lions conceded three goals in their midweek defeat to the Birmingham, with the visitors scoring each time they registered a shot on target.
Holloway was particularly unhappy with Jordan Ibe's opener, which came after two failed opportunities to clear the ball away from danger.
He said: "I can see four things wrong with that goal – and in training we aren't getting those wrong, even a couple of weeks ago that wasn't happening. It's just where we are right now.
"I was pleased with the way we kept going but we have got to organise ourselves a damn sight better when we're out there.
"I expect people to be able to do their jobs, which means us organising ourselves from a set play – they've scored from a throw in.
"Ibe won't have an easier shot in his life because we didn't have a body in the right place.
"As a team, we've got to stop letting them in. To win that game, we had to score four goals and that can't be right, can it? We've got to stop all that.
"Let's see what we can do on Saturday – if ever there was a time to win, it's now."
Asked whether there is sufficient character in Millwall's squad to beat the drop, Holloway added: "We'll see, won't we?
"That's when you find out about yourselves. I've seen times like this when I haven't managed to do it, but I think we will – that's the gospel truth.
"I know people, I know them well and I think they are trying as hard as they can, so I can't ask for any more than that.
"The players really are disappointed but I have to say that the overall collective spirit of the group is much better than it was when I first walked through the door.
"When I came in, we were conceding more goals than anybody else and we'd scored less than anybody else so it was going to be a tough ask.
"Steve Morison had four chances against Bimringham and scored one, which is as good as it gets – ask Robin van Persie."