Do you have your toddler/preschooler enrolled in special activities? Like soccar, t-ball, etc.
We had Ds in Karate for awhile and he showed almost no interest in it, excpet when we were in class. He did not want to practice outside of class so his improvement was slower then the other kids. Next we tried swimming lessons, he did make some small amounts improvement and this fall I am thinking of signing him up again. My sister wants to sign him up for fall soccar, which i think the running around would be good but I am not sure about him doing both.