Vagus Nerve Seizure Seizures...Help The Vagus Nerve Stimulation Therapy (VNS) Or The Ketogenic Diet?

Seizures...Help the Vagus Nerve Stimulation Therapy (VNS) or the Ketogenic Diet? - vagus nerve seizure

My son has epilepsy and cerebral palsy combined, no drug has done nothing for him, he is now 3 years old, seizures since the age of 6 months. So far they have found in the situation, what are the cause of 10 to 15 seizures per day. I have only two options to the left or VNS keto diet, brain surgery is not an option for him, because in the brain. Any tips, suggestions or other information, please help, open to advice