Sleep seizures in 6 year old


I am New to the forum and hoping to find some answers that haven't yet found elsewhere. My son is a 6 year old boy who had a stroke when he was born. He has left sided weakness since there is right part of brain damage. He has never had a good sleep meaning he always twists and turns at night. We have done 3 overnight EEGs and all of them came abnormal with spikes coming from one side of the brain. But no seizures were detected. He is on Lamictal currently but still the sleep issues continue. When he wakes up he is usually sleepy and tired. He has balance issues after he wakes up.

Has anyone experienced this and if yes what course of action was taken.