Dortmund are currently three points adrift of the top three positions in the standings. Seeing the level of difficulty of the opponents that will be face in the next three matches, Dortmund should have had a great opportunity to add to its collection of points. Augsburg, Leverkusen and Mainz has a pretty bad showing record this season. This weakness must be put to good use by Dortmund to return to compete at the top of the standings
Borrusia Dortmund is one of the underrated team in Bundesliga and their form in the early kickoff of the season was not good impressed display, one thing I know for sure is that they will bounce back to their best form after the world cup and continue their winning streak. It's high time for Dortmund to be among titles competition. Talking about weaknesses, all team have their weaknesses and Dortmund happpens to be weak interms of defending, they're not good as Bayern Munich, but on the records, they're doing their best.
If you are aware of the three opponents that Dortmund will face next, then I think it will still not be easy for Dortmund to get full points, especially when playing against Leverkusen. Maybe you missed how Leverkusen performed before the World Cup break, in fact Leverkusen have recovered and managed to get away from the relegation zone and Leverkusen have also managed to get three successive wins.
What's even more amazing is that Leverkusen was able to beat Union Berlin with a score of 5-0, even though at that time Union Berlin was still in the top four.
So, with these considerations I think it will still not be easy for Dortmund to be able to win the match against Leverkusen, moreover Leverkusen will also be playing at home.
If Leverkusen can still play the same as when they beat Union Berlin, or at least can still play the same as in the three matches before the break, then I believe Leverkusen will beat Dortmund. But because of course changes will occur because there is a transfer window too, then any results can still happen but I personally am pretty sure Dortmund will still be difficult this season.