I think I am going crazy

Typical. It shuts down your own production, so it's near to impossible to ever get the dose right. You're on a never ending incnreasing dose pathway.

i fell tons better without the meds, even though I have advanced thyroid disease. I take amino acids to help with the symptoms.

I would also like to say that it is very typical to need a dose change, every now and then. The most common is every two years, out of my research.  This is why we have to get our bloods checked at least once a year.  Our dose needs to be changed because as our immune system is attacking our thyroidand it can cause more damage and that can cause a need for a dose increase. Thyroid failure is an ongoing process and so is our dose increases or less often, dose decreases.  Also, our diets are always changing, vitamin intake are changing, iodine intake changes, weight changes and medication changes..  All these things can change our levels.  There are also a host of other things.  At the top of my head, fatty liver, celiac disease or any autoimmune disease, hormone changes, stress, drugs, smoking, pituitary problems..ect.  So, as you can see, dose increases or decreases are very normal.