Hello – I have not heard of this as a side effect of Tapazole. And while I haven’t seen any specific studies on dreams and hyperthyroidism, I *have* heard stories from several patients who tend to experience more vivid dreams in general while hypER.
As long as you are following your doc’s instructions (if any) regarding taking a single dose or splitting up your dose throughout the day, you should be OK with changing up the time of day, as long as you are consistent with the new schedule.
Take care!