I find this article very interesting, but it goes against everything I've read about reducing rt3.
So far, the advice I've seen is to stop T4 meds altogether and stay on T3 only meds until excess rt3 has been cleared. But this article mentions the need to raise FT3 levels and lower rT3 levels by reducing (not eliminating) T4 meds (be it thyroxine or NDT) while adding pure T3.
I find this very interesting as I have read so many times that pigs produce more T3 and less T4 than humans, and therefore the advice is often to add T4 meds to NDT in order to get a T3-T4 ratio of 1:10 rather than 1:4 (as in pig thyroid/NDT). This article recommends the very opposite, but what he is saying actually makes a lot of sense to me, especially what he is saying about more T4 making the problem worse.