A 5-0 defeat to Borussia Dortmund and 4-2 reverse at home to Fenerbahce have deepened the crisis at Gladbach, whose director of sport Max Eberl wants to see signs of improvement at the Borussia Park Stadion.
"We are in a tight squeeze and we can see that," he told the club`s website "We now have to work things out and that means get rid of the mistakes we are making as soon as possible and do something together on the field.
"We have not done that in recent games and that is why we have conceded many goals.
"We made a decent start to the season. The team is capable and we just have to try and get back to where we were as quickly as we can."
Patrick Hermann and Alvaro Dominguez are both doubts after missing out against Fenerbahce.
Frankfurt have won five and drawn one of their first six games back in the top flight after a year in the second division.
Regardless of that excellent record, and their second position as opposed to Gladbach's 13th, their coach Armin Veh is under no illusions as to who is expected to win on Sunday.
"We are not the favourites for sure," he said. "That would be too much.
"It is no coincidence that Gladbach finished fourth last season. They may have given away good players, but they have also bought much new quality.
"They have a good team, even if the current results don't reflect that."
Veh welcomes Canadian striker Olivier Occean back into his side, although Bamba Anderson is a doubt.