I would want to say Dortmund shouldn't be judged by their most recent performance because they have earlier at the beginning of the season performed brilliantly and did looked promising but then since the struggle to finish the group stage of the UCl became priority to them, their performance dropped which I perceive normal.
I believe Dortmund still have got a chance at improvement even if it might not lead them to finishing at the to or even at the second position but then we can be sure that it will definitely help them maintain a good spot at the top five teams by the end of the season and if they are able to make it to the semi finals in the champions league aswell then we can say they haven't done bad for the season so far. I'm very much optimistic about Dortmund regaining their form again with an improved performance before the end of the season.
Dortmund remaining 9 points left behind Bayern Munich on 2nd standings position and I doubt get improving performance and finish on second place. In this season, Dortmund losses many points and difficult how to reach with top fourth position standings behind Stuttgart and Leipzig with consistent performance and warning for Dortmund raise to fourth position standing in this season.
Dortmund not win last four matches in a row and bad result for them how to finish on top fourth position in this season, if can't improving their performance actually loss the opportunity get Champion League spot standings next season regarding under teams position remaining few points left such as Frankfurt and Hoffeinhem.