One of my girlfriends used the tea and calcium supplements to great effect.

I never had huge supply issues, but I had to express off one side for a week back at about week 3. I hated expressing and I never ever got up to 60 mls, so it sounds like you're doing okay. But after I expressed for that week, that side was a little 'under the weather' for several weeks. I could never get as much out of it, well, bub was never as satisfied with that side. I decided to favour that side as much as possible and put bub to that breast for comfort as much as I could and that did the trick in increasing my supply from that side.