Thank you for writing.
I understand how difficult it is to get two different opinions on why your tests cannot be accurate.
Thyroid medications are important, as you know. We cannot advise anyone to skip them for several days in order to take a test. If you have skipped your meds before and not had a bad reaction, it may be ok to take them again on the third day after your test, especially since this is a one-off test. But this is a question you need to ask your doctor. If he/she and YOU think it will be ok, then go ahead. But you need to run this by your doctor first and make the decision yourself. Please keep us updated.