I think I know where you're coming from. I recently reached saturation point with all the conflicting science about food and diet. I'd made mistakes off the back of "science", so I decided that the safest option was to aim for a 33:33:33 macro split, eliminating stuff that I am pretty sure is bad for me (gluten, soya, veg oils). I figured at least if I aim for moderation I've got the least chance of damaging myself, ha.
After a few weeks though I started to count my macros and I realised that I had naturally gravitated towards a higher carb diet (apart from when I'm eating a lot of Greek yogurt :P).
I know you've got a thyroid condition and there is a set of advice that goes with that, but personally I think that stressing about your macros is probably more damaging that what you eat. I would aim for moderation and see where you naturally gravitate to.
“I'm glad mushrooms are against the law, because I took them one time, and you know what happened to me? I laid in a field of green grass for four hours going, "My God! I love everything." Yeah, now if that isn't a hazard to our country..."
― Bill Hicks
"Sometimes eating the wrong food with the right attitude is a better choice than eating the right food with the wrong attitude... That’s how powerful the mind and the heart can be in the healing process."
- Chris Kresser