Hi Zoe,
Welcome aboard sweetheart! May I guess you have been reading the boars here for awhile, and are now coming forward for advice to try to boost things along? It makes no difference. Just had to check my hunch. That's the kind of thing I could see myself doing. LOL
So, two years? Have your levels been that high from the start? You are on some pretty high amounts of both. Do you get headaches at that level? Spreading through the day, you might not.
You say some growth...can you be more specific? Do you have pictures at all. More info would be a lot of help. There are some really smart people on this board (hee hee... I am sadly not one of them. LOL), and you can get a lot of support here, but a little more info would help.
Do you feel as though you stalled? Did you have the famous tingles and so forth in your breasts or behind your nipples?
Us older girls are not generally going to grow as fast or as far as our younger sisters do, since age slows down so many things that advance the process. But there is a lot that can be done.
Give us a little more to work on, honey.

Hugs