Everyone's experience is going to be different, so you can't plan this out. You never know what to expect. Since nothing very bad is happening, then live one day at a time and see how things work out.
Not sure why you took this med when there are other choices if you think that caused reflux, but that is irrelevant now. Reflux can be unpredictable - I suffered badly for maybe 6 years, then it just disappeared right in the midst of one of my worst months.
I don't know that reflux is caused by antidepressants. More precisely, they can cause digestive problems, which can include reflux. You don't say if you had reflux before starting the Zoloft or if the reflux started soon after starting the Zoloft and you never had it before that. While doctors don't usually get into this part of medicine -- natural physicians do -- digestive problems that don't have a physiological cause such as being a side effect of medication or a result of some other health problem arise because of how we eat, what we do after we eat, and what we eat. Individual react differently to different foods and to eating in general, but reflux usually happens when people go to bed too soon after eating or recline too soon after eating or eat too much or don't burn off what they eat or eat foods their systems don't handle well. To fix it, you have to either fix the condition that created it, which you seem to believe was starting the Zoloft, or if you don't have one of those conditions you have to treat it as you would if you did have one of those conditions, which is, eventually you get around to changing your lifestyle and eating habits so it goes away. Some of us just don't really want to do that, especially when we suffer from depression or anxiety because eating is one of the few things we can enjoy without stress, so saying it can be dealt with doesn't mean it's easy to make those changes, but if we don't, we keep the problem. As to your other symptoms, you took a year to go off the med. So you had a very bad case of withdrawal, obviously. Some of the symptoms you're reporting are withdrawal symptoms, such as the confusion and the off-balance feeling. If most days are good, this will probably go away. But nobody can say for sure as this is a very individual thing. Most people apparently get over this stuff within a couple of weeks. But many don't. Only time will tell. As for the anxiety, if you've never fixed the problem, remember, all that medication didn't treat the cause of your anxiety and so it didn't cure it. Time might have cured it. You might never have had an anxiety problem in the first place -- it might have been something else entirely. Hard to know now. The best you can do now is exercise regularly, meditate, see a therapist, eat as healthfully as possible, treat yourself great, do all the things you love to do, and try not to overthink it.