What should I be doing for a possible future in IB??

I’m a freshman at a non-target school (Majoring in Business & Economics) I want to eventually work in IB, but as of now have no idea what I should be doing. I want to gain some sort of experience before pursing internships in the future but have no idea how to actually go about doing that. I have nothing on my resume that aligns with what I want to pursue and my LinkedIn is also sitting pretty empty right now, so any tips on how to make either attractive is greatly appreciated.