Your FT4 was quite high, so bear in mind that when adding Cytomel, the rule of thumb is to decrease Synthroid by 20-25 mcg for every 5 mcg
Cytomel added.
Cytomel is roughly 4 times more powerful than Synthroid, so be sure your doctor knows how to use it and doesn't try to dose it like Synthroid. Also, Cytomel is very fast-acting compared to Synthroid, so many of us split the dose and take some in the morning and some later in the day. Start low and work up.
Good luck!