I believe Stuttgart will manage to qualify for the Champions League group stage, what is your opinion? I know there is a good progress in Dortmund and Leipzig's form recently as well but a gap of six points is a really good advantage for Stuttgart to make it.

I agree with you because Stuttgart has been very impressive at this middle of the season because there record lately is very commendable Whereas there last six matches has been so favourable for them because they were able to win five matches and draw just one match which shows that they are in a good shape and like you said there points difference with Borussia Dortmund and RB Leipzig is quite much because it will take time for Borussia Dortmund to get to the same points with Stuttgart because checking the matches Stuttgart will play they will have an advantage of wining most of the matches, so for now is actually possible that Stuttgart will qualify for the champions League next season.
Compared to Borussia Dortmund and RB Leipzig, Stuttgart's performance is much better and more consistent, so I don't doubt that their chances of finishing in the top 4 are very large, and also a 6 point advantage now makes it good capital for Stuttgart to remain comfortable in their position without there is significant pressure.
I think now only position 4 is being contested by Borussia Dortmund and RB Leipzig and it is quite fierce, while for positions 1,2 and 3 I don't think it will be disturbed anymore.
Yeah that's right because with the performance of Stuttgart's and there consistency on this season they are sure of the third position of the league because they currently have 6 points over Borussia Dortmund and considering the performance of Borussia Dortmund it will be very difficult for them to compete with Stuttgart's on the third position, so like you said the only position that's available for them right now is the fourth position, so Borussia Dortmund and RB Leipzig will compete for the fourth position and is going to be very tough for the both team because they will be trying all possible best to qualify for the champions League next season.