Question on hypothyroidism?

hey guys! I was recently diagnosed with slight hypothyroidism and I was able to gather quite some info on line but I was wondering about people's personal experience. did you find a diet that works for you? if so, what kind? I was eating macrobiotic for a long time but now I need to find something new since soy is a no-no food. did you see the changes in your energy levels before and after treatment? how much do you exercise? and what kind of exercises do you do? how much are you suppose to eat? 1200kcal? or is it ok to go lower than that? and did anyone experience significant weight loss after starting hormone replacement treatment? for me it didn't change so much. I just find it easier to get out of bed in the morning :)

any information is extremely helpful