Of course any seizure is one too many. I believe you’re talking about Absent seizures when you say “mini seizure.”
How often does he experience Absences?
How long do they last?
Is Keppra the only medication he is taking?
Has he been on other seizure medications?
Did Keppra ever decrease the Absences?
If I had my choice of where to go I would definitely choose the Mayo Clinic Epilepsy Center which is a level 4 center and has been rated number one in the U.S.
Best of luck to your son and family,