Hello,
I live in southern Indiana several hours always from you.
My Cali is 6 years old and she plays all day, but as she aged her sleep times got a little longer.
As a pup it is like their motor is always running!
They will slow down some later, but you are right to never let her get away from you, and the more activity the better. So you are doing everything right
They just abound with energy -- and cuteness, of course!