It is really not satisfying to see Milan in this condition. I mean I know they have been trying to fix things recently but they started the national break with a bad result against Fiorentina. 
As far as I can see, there are some inner problems there too. For example, in the Fiorentina game Fonseca tried to explain his players that the main penalty taker of the team was Pulisic. But Theo and Abraham took those penalties and missed both...
Fonseca really needs to work on this topic. He should teach his players to respect and obey his choices. Otherwise this team can't be successful much this season. It's no joke.
It is very difficult for Fonseca when his relationship with the players and even between players is not harmonious, Fonseca as a coach seems not appreciated by the players, it is very disappointing for a team that is trying to rise and I think if Fonseca does not succeed in making changes to the discipline of the players then he will never be able to make AC Milan's performance better.As far as I can see, there are some inner problems there too. For example, in the Fiorentina game Fonseca tried to explain his players that the main penalty taker of the team was Pulisic. But Theo and Abraham took those penalties and missed both...
Fonseca really needs to work on this topic. He should teach his players to respect and obey his choices. Otherwise this team can't be successful much this season. It's no joke.
All the changes that have occurred in the AC Milan team this season have indeed made them very difficult and I think that is normal for a team with a new coach, everything takes process and time.
AC Milan is like a riddle at the moment as they were able to win against Inter Milan away from home while they are losing important points in much easier games. The red cards are an issue as that is a disciplinary thing. A team like them should not be receiving these red cards, especially in games where they have a big lead and can slow down and not lose any players for the games to come.
Due to the new Champions League mode, you can't even say that they have some good weeks ahead of them against weaker teams. Napoli is waiting for them, Real Madrid is soon waiting for them and an important game against Udinese which they need to win in order to not fall behind too far. It's going to be an exhausting season specifically because of their bad start.