When it comes to your medication, you know best.
When you feel you have been misdiagnosed, then by all means, search out a better medication and doctor.
I was initially misdiagnosed as Bipolar and put on Lamictal. That took me to the moon. Apparently, a bad reaction to Lamictal, by some, is a good indication that you aren't Bipolar. And then the journey began to get me on the right medication. I'm on Cymbalta and Buspar and it's great.
Good Luck in the tapering.