What should I do as a freshman?

Currently a freshman at a top LAC (not W/A, but M/B*). Finals are almost over, and I think I should hopefully end up with a 3.9 or 4.0 for the semester. I was planning to be a Government major, but I'm more interested in entering banking out of school and didn't do badly in my Intro Micro class.

I probably will be a Gov major, but seriously considering a double major in Econ or just majoring in that because I find grinding for exams more rewarding than writing papers lmao

I haven't applied for any internships or anything, but a few have been popping up posted by alums. I was hoping to use my GPA to apply soon. Our school funds unpaid internships (and I get extra because I'm on a full-ride and FGLI), so I'd like to get paid for something worthwhile over the summer.

I was wondering what else I should do next semester? Does it make sense to start networking now, and what other tips should I have in mind? Thank you!