Hi
I would maybe think about testing your TSH, T3 & T4 again, medichecks offer a finger prick blood for the above and it’s I think £59.00.
It could be that your T3 is too low, I know I keep going on about T3 results, but, until I joined thyroid forums and started reading books on this I didn’t realise how important T3 was, my T3 was brilliant despite increasing my Levothyroxine that’s why I ditched levo and went on NDT.
If it’s low you will struggle, many people have to add T3 to their Levothyroxine as adding more Levothyroxine pushes them up too high, it’s a balancing game I’m afraid.
As said GP and some endo’s don’t see the importance of testing T3.
Best wishes & good luck.