I have only been on T for 6 months now, but I have not seen any similar change in my areolas. They're as big as they have been. Maybe it's just in your head, but just wait and see. There are more views than mine. I know I'd love it if they shrunk.
@Happy Girl: If you see this, I am at a loss for your concern with areola size. They vary from one extreme to the next and whatever they look like, it'll look normal. Maybe that's all you needed to hear.