Albion still have a right-back crisis for Saturday's trip to Blackburn.
Poyet, speaking at his regular Thursday morning press conference, said: "It doesn't look good. It's difficult times.
"The weather doesn't help either, because right now we have got no pitch to train on, which is not fun."
Poyet will revert to an orthodox back four at Ewood Park, probably with Adam El-Abd at right-back, after abandoning an experiment with three central defenders during the first half of Tuesday's 2-2 home draw with Millwall.
He said: "When the fixtures came out Blackburn was one I was looking forward to. We are probably not in the best kind of shape. I would have liked the chance to go there with a fully fit squad but you cannot plan it like that.
"I am sure we are still good enough to win the game, so I am calm and relaxed. The idea is to make the right decisions now because of the injuries and make it simple, nothing complicated any more, because we're not very good when we change things."