Hi Alexis,
Best person to answer this one would be your Endocronologist. From your blood tests he/she should be able to see what's happening with your growth inhibiting hormones. But even then, it may not be conclusive.
There is some anecdotal evidence that your feet may shrink slightly, depending on the HT regime you are on, or at least remain as they are.
Sorry I couldn't be more helpful, HT is such a lottery. You just never know when or what you win.
Huggs
Catherine