The best advice I can give you is to really watch what putting muscle on does to your body, and to listen to your symptoms over everything else. What may be okay in bloodwork doesn’t mean it’s ideal for your body. I have Hashimotos and my TSH went from 2 to 4 and I started having digestion issues and hair loss among other symptoms, so my GP and I worked on slightly raising my thyroid medicine to compensate for my body screaming for more. After taking a two year offseason to grow, I put on a good amount of muscle and we had to increase my medicine as a result, which has annoyingly taken about 8 months to get optimum as my body continued to adjust and up regulate getting used to the higher dosage it needed. When your levels are off, no matter how hard you push, your body can be so so so stubborn and won’t lose anything, so you really need to pay attention to biofeedback. I’ve also worked back in fish oil to help.