I’ve been having hair loss for two and a half years, since I first went hypo. My levels have been changing ever since, and my doctor tells me the hair loss will stop when I’ve been on the same dose for a long time. It sounds like your levels are still changing too.
I have hairs of all lengths growing from my scalp, and there are always plenty of new ones. My hairdresser says it’s a natural way to get texturized, and that I still have plenty of hair. That’s looking at the bright side–but I am tired of hair all over the place.
I haven’t found anything that helped at all. If I wash my hair less, there’s just more in the brush and in the drain the next time. 
Dianne W