Suggest Treatment For Recurring Seizures In A Child After Stopping Medications

4 year back my son started Seizure problem at that time attack was once a month than we stared using Dicorate ER 500 every evening and morning and Frisim 5 mg at evening, after using this on every day basis he was perfact for three year.
after three year he left to take medicin and problem started again, now again we stared medicin but find attack twice in last 6 month. kindly advise