You shouldn’t have to go through this at 73 years old. If you have been on the same dose level for many years and have never escalated that dosage she is not doing here job very well.
As we have discussed before if Doctors really get to know their patients they would never insist on taking someone your age off a drug knowing what it will put you through.
If you are not having side effects find another doctor.
There is no one size fits all when it comes to any of us. We all react differently to any drug we are taking and all drugs have side effects.
I wish you the best of luck.