How to move on when you're drifting apart from friends?

I have a big group of friends, in fact, in this big group of friends, there are many little groups of friends. We've all been friends for a really long time. But it seems like we're in moving on, and don't really have anything in common anymore, some have new jobs, relationships, friends. I've begun to accept that this change is going to happen, everyone's trying to carry on as normal, in denial that we're all drifting apart, but it's happening. I feel myself that I'm moving on, and have been ever since I joined Uni last year, only I'm still living at home, so I get to see these friends, and I have a part time job, so I don't really get to see them as much anymore. My fear is, while the inevitable is happening, how do I make new friends? Who am I actually going to socialise with? I'm really scared that I'm gonna be left without friends. Outside of the group, I only have about 2 other close friends