Garry Monk bemoaned the Owls’ inconsistency following the 3-1 home defeat to Derby on Saturday.
A dismal first half saw the Rams race into a 3-0 lead and although Wednesday rallied after the break the earlier damage was done.
Monk said: “We’re going from one extreme to another at the moment. You could say the first goal was unfortunate with the deflection but we compounded that with two individual errors.
“You can’t gift goals in any division never mind the Championship. You will get punished and we did.
“Alright, we were a lot better in the second and were the better side but all the damage was done in the first half, we gave ourselves a mountain to climb and we couldn’t overcome it.”
Monk rang the changes early, using all three substitutes by the start of the second half in a bid to reboot the contest.
The Owls’ boss was reluctant to do so but felt it imperative given the way the game unfolded.
He explained: “I would rather keep a consistent team and make as few changes as possible but sometimes you have no choice.
“We weren’t good enough, it’s as simple as that. These players train well, show the right attitude, but they are not producing the goods on the day.”