Not even looking at the TSH, the reason for lowering your T4 med, is because your FT4 is over range. Your FT3 is almost mid range, and I think should probably come up more if you keep the cytomel at 25 and drop the T4 med to 112. I'd give it a try for 6 weeks, then retest.
barb...do you know if taking prednisone affects my thyroid levels in any way?
i also have lichen planus and normally take prednisone during a flareup...but my dermatologist had me on prednisone DAILY for 6 weeks...reducing the dosage every 2 weeks. this took place during the same 6 weeks between my last two labs.