Yes sometimes he has brief "freezing" spells and more or less has to wait for his feet or body to move.

Meds aren't 100% for that part of it..It is a PD thing..

Are you able to contact the dr by phone or email?
Often for a minor med adjustment an office visit is not really needed..

He might need a pill divider box that has sections for each day & morn/ noon/night etc.. to help him keep track of when taken..