Networking for PE

Hi all,
I have a 2027 Ib summer analyst role, and atm my plan is to do 2 years ib then move to a pe firm. I go to a target school as a STEM major, so I’m pretty confident that many large infra pe firms will have alumni who will (hopefully) be willing to talk with me. What should my networking timeframe be if I want to exit into PE? I was thinking after my internship I should focus on connecting with those people but honestly just looking for advice.