Before I go do a new medical every year, I call my doctors office and ask for the dates I've been in for a period of 3 years. I may go to the doctor only once a year, so I end up reporting the same [old] visits again and again. I've asked my AME specifically about this before, and he said that is best way to do it. It does require a bit of record keeping - but I have my doctors office do it for me.