Suggest Treatment For Cerebral Palsy

I was told my son had cerebral palsy when he was 3 years old. now he is 12 years old. at that time we was told he had cerebral palsy that is doesn t get worse. he was only walking on his tip toes and had to have minor help at times. Now he is in a wheel chair , having to doing therapy and having difficulty holding certain things for over a period of time. I m not sure if its due to weight or something else is going on but he has drops plastic plates that has chips etc on it and this happens at least a couple times a day.