@hippele
I wouldn't decrease your medication until you have discussed it with your neurologist. He/she may have valid reasons why you need to continue taking them.
If you decrease them and you drive I hope you stop.
If someone has started having seizures again, most of the time you can just restart your medication and again gain control. But sometimes depending on how long a person has been off meds, (if you end up stopping) triggers, epilepsy or brain may change and occasionally your previous meds will no longer be effective. I would not make medication changes without consulting with my physician.
Take care/good luck,
Jake