Goals from Scott McDonald and a Jermaine Easter penalty either side of a Simon Walton double saw the two sides finish level,a result which keeps the Lions unbeaten in pre-season.
Holloway again fielded two different sides in each half, as he did in Tuesday’s win at Dartford, and said organisation was an issue with his second-half selection.
“I’m delighted with the first half,” the Lions boss explained.
“The organisation let us down in the second half with a couple of the younger people and the fellow (Walton) that took the two free-kicks.
“I thought we could have been further in front.
“Lee Gregory was unlucky with the one he lobbed it over, normally he puts that in.”
Millwall went into the break a goal to the good but soon found themselves trailing 2-1 after a double salvo from Walton.
However, Holloway claimed he was satisfied with the way his players fought back.
“Again, I’m delighted with the response, and with what I came up with to get us back in it with moving a midfield player.
“I didn’t get that information on early enough or quick enough, so that’s something I need to work on - taking more responsibility to listen when there’s something in the war going on.
“I’m the general on the side so they have to get that.
“We had a few problems with that last year and we showed brilliant skill to come back in.
“It’s just a shame we can't give Fred Onyedinma the ball a bit more.”
Some of the passing football on offer was synonymous with what a Holloway outfit is known for, and the gaffer praised the off-the-ball structure of his team.
“What we did without the ball was brilliant,” he said.
“How many times did they have a throw in and we won it back in three or four seconds?
“As a game, and how it was, if we had lost I would still feel like this, there was so much there I was pleased with.
“It’s such a step forward to looking how I like my teams to look.
“They fought and battled, they were with each other - there were only two things totally wrong.
“And it wasn't just the fella who took the free-kicks.
“We got organisation bits wrong with the younger team, who haven't been here, who didn't step to the plate and organise things.
“That isn't too big a problem. That’s what you don't get when you play yourself.
“We looked disciplined, we looked out for ourselves and we didn't lose our rag like we could have done.”
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