D.W.
T.,
He has a life time of school ahead of him. I would pull him out and just have fun with him while you can! MAYBE look at a a 1 day a week mom's day out for social purposes. Or find a playgroup, or even go to the mall w/ a big play area....
You can do the library story times, make grocery shopping a learning adventure in colors, matching w/ coupons, etc.... The Farmers Market is another fun place to wander and talk about things. Heck, we even go for walk around the block and see how many things we can find of a specific color.
Animal Babies and My Big Backyard are great magazines that offer lots of fun activities.
The time you have together is going to be gone before you know it!
D.