Thanks for writing in to Healthcare Magic!
You should not taper the drug by your self, it can lead to catastrophe.
You have taken it fairly long but it must be done under physician's guidance.
You can even continue the drug while planning pregnancy
if the tapering is not possible but you should give a trial to full tapering first.
If you have any further query please let me know I would try to answer it for you.
Wish you a great health!