The answer to this question will be determined by things like your doctor, your medication, where you were when you started to get help, your support system, and all sorts of other things.
Depression is too dangerous to play with.
Do not play with reducing your medicine, changing the way you take it, or discontinuing it. If it is working for you now, do not change it unless your doctor changes your medicine. Everyone knows more than your doctor, and all of them have advice and can tell you how to get over it and get on with your life. If it's working for you, don't change it. If it's not working, tell your doctor or therapist.