My son wants to stop taking his anti-seizure medications that he's been on since he was 13 years old he is now 22 he is an adult so I'm looking for an alternative to this option
He needs to seek the advice of a his neurologist, if he agrees with your sons decesion he will give your son a plan to reduce the meds gradually then eventually stop them.
It's not a pleasant experience reducing meds he needs to understand what could possibly happen and be prepared.