When did you make your friends?

It’s orientation week at my med school and I’ve been going to all the socials, but it feels like every interaction I have is so superficial. I’m also very introverted and I’m scared that after orientation we won’t have an opportunity to “meet” as many people or people might form their friend groups or whatever. Did most of y’all make all your friends orientation week?? Also any tips for someone who is mega introverted pls