My hypothyroidism is caused by hashimotos - doing a 3 day fast put it into remission - not sure if it works the same for straight up hypo.Thyroid meds work better when faster so I would still take them
I have had hypothyroidism for years now, fasting and losing weight slowed down the illness progressing in my case, nevertheless when fasting i always take my meds. You take them on empty stomach anyway. And you shouldn’t ever stop them unless your doctor allows it.