Resent Request for Approval

Is there a way to send a reminder to someone who received an automated request for approval? I have program chairs who are either not responding or are not responding in a timely manner, so the Approval Status remains "Requested".

Right now, I reset the status so it triggers the automated request for approval again. It would be better if I could re-initiate the trigger (if user doesn't respond) after so many days.

Thanks