M.T.
Like you, my 2 year-old son had little interaction outside of my home. I enrolled him at the My Gym in West Orange for a class on Saturdays and HE LOVED IT! I would highly recommend it. Gina, the owner, and her team are very good with the kids. It was a great introduction for my son.
I did that for six months before I started him in daycare. I believed it helped in that transition, as he loves daycare now.
Good luck.