As for Dortmund, they may do well this season because Leverkusen is always their biggest obstacle every season, so you can see that since they are very competitive and they are rivals, they are not in good shape this season, but maybe it's their turn this season to top the league table after Bayern Munich.
Dortmund currently has a better squad than Leverkusen. They also have a more experienced coach than Leverkusen. So, Dortmund certainly has a better chance of competing with Leverkusen this season. Dortmund might even become Munich's strongest challenger this season. This is a great opportunity for Dortmund to knock Leverkusen off the runner up spot, and I can't wait for the Dortmund vs Leverkusen match in november.
Leverkusen has not yet been able to start strongly enough, due to which their weakness has caused them to fail, which is okay to some extent, but they do not have the performance like Dortmund because they improve themselves, due to which their weakness has disappeared in every match and some good and new ability is created. If Bayern Munich's performance is higher, then we can consider it good compared to that because their start can also be quite strong. It is still quite far away, but we can see their performance and their position before that, which will give us a better idea than the November match.