She will calm down as she matures (3 to 5 years of age), in the meantime, she is in the prime of her life right now. She requires a lot of exercise. It’s not hyperactivity, it is normal for a young healthy dog to want to move!
I had a corgi that was wild, the only thing that worked was 3 to 5 mile brisk walks every day or a 1 to 2 mile jog.
The backyard stuff wasn’t enough. That’s the deal with working/herding dogs, they need a lot of activity or they become neurotic.
PS: She was calmer at age 7, with the above recommended exercise included, cancer got her at age 9+ despite the best diet and optimum exercise.
Consult your veterinarian, see what he suggests, I suspect he will agree with me.
