EEG netheri pick any sign of wave or discharges

Hello all,
I’m new here!
My son is 10 years old now, he has 3 seizures at least per year about three years ago we’ve seen specialists neo and he prescribed carbamazepine 250m since the last three years no seizures at all,
yesterday my son had EEG it was good and not show any waves or discharges does that mean my son won’t have seizures again as eeg didn’t pick any sharp wave it was normal, compare to the last two eeg perior 100% different.
Thanks for your reply