My baby is growing up too quickly

I can't believe how quickly he has grown! It seems like just yesterday I was waddling around; uncomfortable and pregnant. Now look at my baby, almost 7 months old now! It makes me sad in a way to see him growing...he is our last (barring any oopses); yet I love to watch him grow and develop into a little person. It is like you can see their thoughs and watch the little cogs turning in thier brains. He is really getting vocal and active. I love him so much!