Question for those who really know - What’s the best thing for me to do?

Yikes! I am not an attorney so I may not really know.... But, I would
contact AOPA and get their take. IMHO even tho the AME advised you to
not report the condition, it is YOUR signature on the form and thus
you are responsible for misrepresentation on the FAA form. A real no-
no.

BTW I take 240 mg verapamil and have to get an ECG every 2 years to
get a 3rd class medical.

Regards,
Jerry