slow down please

My son last day of kindergarten is tomorrow and so is his kindergarten graduation. I can't believe he is already 6 years old and gonna be a big brother in January 2018. He is such a sweet, kind, caring little boy. Always there to put a smile on anyone face, never wants to see anyone cry, always trying to cheer them up. Hard to believe that 6 years ago he was a preemie baby.