I should ahve also asked for your labs results... with the decrease in meds you should have had labs done right?
Do you have the numbers on those labs? Share them if possible.
Another real stand out concern and explanation is the diabeties meds... when sugar is metobolized correctly sometimes the thyroid will be able to convert the meds better with the liver and then you may not require so much thyroid meds to stabilize.
Again that would only be clear if the labs indicate this.
Diabetes is linked with hypothyroidism. - especially autoimmune hypothyroidism.
My weight has been close to the same for a long time, I am taking diabetes medicine now, but have been taking it for about a year now. I am a 58 year old male.
Has your weight changed? - Are you taking different meds? - If you are female - are you entering a diferent chapter in your life at the present time?