It sounds like you are eating better than I at eight months. For me tastes had changed and I am not sure if it ever returned to normal or I got used to the changes. Certainly there are foods I no longer eat or enjoy whilst others are new and tasty.
The teeth thing I believe has more to do with radiation than with taste. Just my opinion but the same statements were made by Japanese victims who survived the bomb radiation. Many patients in this group who have had radiotherapy also make similar statements. It goes away in time. Else we just get used to it.
As for the rest of the issues, in my opinion and experience, you have several more years of recovery ahead. This is your new normal for now but likely things will improve with time. You are not alone in this. But you are on the mend.