SI posted," new features include AI will adapt to the changing nature of a match with more intelligent tactical tweaks to keep you and your team on their toes.
The AI managers will now be more open to chasing leads , and will react more realistically when playing against an inform team."
You have to watch the match and react to how the match is going and pay attention to how the AI is playing you. With Chelsea coming on a 12 game winning run, with a positive mentality, attacking fullbacks and most likely a high D line
I'm assuming the AI is sitting back and counter attacking you.
You don't have to change your whole formation just a few tweaks. You have 3 tactic slots make one for your regular tactic then one for a less attacking one maybe with balanced mentality, FB on support, pull the line back a little and rotate based on how the match is going.
Just a few suggestions.