In eating the same things or pretty much the same things over and over, you can slowly be depleting your body of certain nutrients/minerals. Have you tried looking at your iodine content? Manganese? Selenium? These are vital parts of healthy thyroid/hormone function. I know very little, but consulting with a nutritionist would definitely help to analyze what you are getting/missing. I would definitely recommend staying away from gluten, so things like rice, quinoa (packed with different nutrients/minerals!), etc. I have had two clients battling the same as you, and for a little longer (late 30’s, early 40’s) and both of them have had success with the Ayurveda lifestyle/diet. It took a little bit 3-6 months, but their allergies are gone, their energy is back, great skin/hair and digestive issues gone. I’ll get their specialists name :-)