Can I ask you a couple of questions?
Where did you stay?
Was the MMI station like a "standard" MMI? Like was it similar to online/book prep stuff and what kind of prep material did you use?
I stayed with a student host near the school.
The MMI stations weren't as bad as the ones that you see online that try to scare you. It's honestly just to test your character.
Some of them were very stoic and some showed some facial expression/eye contact, but don't get too worried if it feels like you're talking to a wall.
You don't really need to prep too much