Coming of Zoloft after 9 years?

I've been taking Zoloft since 2001 and I think it is causing GERD/Reflux symptoms and some other symptoms, so am trying (with the help of an MD) come off the SSRI and use Buspar instead. I have been taking 175mg for the past 4 years or so and have come down to 150mg (for the past 2 1/2 weeks). I hope I can get through what I think is still withdrawl (withdrawal); also, I think a part of the withdrawl (withdrawal) process becomes a head-game- you know, you get anxiety about the anxiety. Anyone been able to discontinue Zoloft after being on this high (or around this high) a dose for nearly as long as I have?