You poor thing! I don’t really have any advice for you, other than keep doing what you’re doing! After my first Covid shot, I had a metal taste in the back of my throat, my mother and sister also did and we all lost our taste and smell. It’s been over 2 years for me and I’ve also had 7 Stellate Ganglion Block injections which are suppose to bring back taste and smell. It hasn’t yet, but I’m not giving up HOPE as that’s all I have left. Nothing is really helping it come back, not even time…I can detect only salty, sweet or bitter on my tongue, but not any flavors of any kind. I guess I will be eating my look and texture for a while! I wish you luck and courage on your health journey!