My child is having -6 cylindrical power she is only 5 years. what is the best remedy?

Hyperactivity: Some children are more hyperactive than others. The key is to differentiate what may be within normal range vs those who are in need for additional evaluation. One way is to see if the child is doing what is expected of her at this age e.g. Normal eating sleeping and listening to your commands and not getting into danger areas to get hurt or hurting others.