I think, this season is not about Bayern Munich being inconsistent, but, because Bayer Leverkusen is very consistent so the results are obviously very impressive for Bayer Leverkusen in this season. Because afterall, Bayer Leverkusen can maintain its unbeaten results in all competitions and ofcourse, with this great success, it is very worthy for Bayer Leverkusen to get the trophy this season. Thus, I think it is no longer necessary to think or create scenarios for Bayern Munich to be expected to get the trophy because anyway, it is time for the Bundesliga to get another team to get the trophy and it is time for the Bundesliga not always only about Bayern Munich.
Bayern Munich was eliminated in DFB Pokal and they got 4 loses in Bundesliga. It is very clear that Bayern Munich performed inconsistent during this season. Although they have a great striker (Harry Kane), they can't optimize the ability of Harry Kane and its squad. In my opinion, it is caused by the coach. The coach of Bayern Munich can choose proper tactics for Bayern Munich players.
When Bayern Munich failed to play consistently, Bayer Leverkusen can play very consistently. Xabi Alonso can apply the right tactics for Bayer Leverkusen players although they sometimes got a problem with injured players. It is interesting because Xabi Alonso doesn't always rely on their attackers to score goals, Bayer Leverkusen defenders and midfielders are quite productive. They could score goals when the attackers played under performance.