Daycare dilemma

I got the call that we've gotten into the daycare/preschool of choice for the fall. We've been on the list for ages so I had sort of forgotten about it. Of course, now that it's here, I'm having all sorts of anxiety about it, partly since the last time I took a look was back in December, I think. Andy was a totally different kid back then it seems. I still like the idea of a real school environment where he can start to learn more and have more structured activities (I can't wait for that first "art" project). That said, I'll miss the one-on-one mothering he gets with his babysitter now. Of course, I'm also dreading having to break up her since I really like and appreciate her. For now, I'm going to take another look at the school this week and start thinking about next steps. The whole thing makes me want to throw up. I have no idea what I'm going to do when he goes to kindergarten. And yes, I realize that's four years away, but in my mind, it's never to early to stress.