Bundesliga Bayern Munich is a strong team and they are doing well but the problem is that the two teams you mentioned are performing better than their expectations which is why Bayern Munich are not going to the best position in the Bundesliga despite their consistent performances. Bayern Munich will need to continue their streak in the Bundesliga until the end of the season if they are to win the league title this season.
Leverkusen, Dortmund have been performing consistently but it is difficult to maintain their consistency till the end of the season.
No matter how the other teams in the league perform, Bayern Munich should focus on their performance so that they don't suffer and if they can stay consistent, everything will be in their favor.
Bayern Munchen position is starting to come under pressure along with the increasing performance of Laverkusen, VfB and Dortmund in the Bundesliga. In the last decade, Munchen has managed to end the season by winning the Bundesliga trophy. For this season, the Bundesliga is no longer relevant if it is called the Farmer League, the competition for the top four standings is very competitive and each other takes turns topping first place. Tuchel must be aware that this season is more difficult, where Xabi Alonso squad managed to top the standings without losing. Another fact, Dortmund also has an unbeaten record, while VfB has lost once. So Tuchel must be really alert and must not be careless, resulting in losing points.
Laverkusen, VfB and Dortmund have the ambition to break Munchen dominance, of course with consistency until the end of the season. Goal productivity is also very important in the Bundesliga, where Munchen managed to beat Dortmund last season and won the championship because of superior goal difference, while in terms of points they pocketed the same amount. Even though Munchen is currently in third place in the standings, I think the difference of two points can still be caught up in the following weeks.