Question about taking cytomel twice a day prior to RAI

oregonmom

I just completed my 2nd surgery less than a week ago. My first was not originally for cancer-it was for Hashimoto's. It was a partial lobectomy in April. This surgery was a total neck dissection and removing the rest of the thyroid. I was put on generic Cytomel to prepare for RAI. I was instructed to sleep sitting up to lessen swelling. So here is my question....I was instructed to take the medication twice a day on an empty stomache. I take it once in the morning and once before bed. Is this why I'm not sleeping? It doesn't feel like insomnia, in fact I feel great. Much better than my first surgery. I'm just worried that I'm days from hitting a wall and want to make sure I'm getting the best rest for my body. Anyone else on twice a day? If yes, when do you take it?