I will not rush to say that the dominance of bayern munich will end, this season is not over, the Bunbesliga still have a very long schedule of matches.
everything is still very possible for bayern munich to return to the top of the standings. although it will take some time to get back to the top position.
it's not easy, but so far they have only one defeat, although three of their previous matches ended in draws. but I'm sure, Bayern Munich will return to its previous form and achieve victories in the next matches.
Agree with you that there is still plenty of time for Bayern Munich to return to the top of the table as before. In fact I think they will be in good form again in the near future. Moreover, those who are now above Bayern Munich have not played a match with Bayern Munich. If they win that game then Bayern Munich will easily regain control of the Bundesliga.
It's not just them getting back, of course Bayern will get back and be better, there is no doubt about that. But the fact that they have already been bad is a proof that it's not working this way. They should have been at the top, maybe undefeated and just pure wins, because they have a roster capable of doing that if they wanted it. But they didn't had the proper tactics ready for the roster they have, and that's a problem for Nagelsmann.
I still promote Tuchel for the position, he is free agent right now and he is German and he worked in Dortmund before so he knows the league very well. I would say that it's much better for him to take over and rule this team.