Your levels may show as back to pre-T state but that's just what's in your blood. Your body's fat cells, and especially hair follicles will hold on to higher levels of T much longer. And that T could still be making DHT. I think that might be the explanation why you're still experiencing hair loss.
How much longer it's gonna stay in your hair, I don't know. But I think I've heard that substances like drugs and nicotine can stay in hair follicles for up to about a year after stopped intake, and my wild guesses tell me T might stay in them for about as long, but yeah it's just a wild guess. An endocrinologist might know this.
Why your hairloss stopped temporarily around your period might be cause of that being a very rapid change in hormone levels which could have temporarily lessened production of more DHT, but not have stopped it permanently.
I'm not sure if my hair loss was due to me taking T or something else, cause it doesn't fit the MPB pattern but I can't think of what else could be causing it, cause I've ruled out all else that I can possibly think of. It started getting very frail and thinned out evenly everywhere, at around 3 years on T. I kept taking it for 3 more years before I quit it cause of wanting to detransition. I've been off it for 3 months now.
I know that detransition is just ONE of many reasons you can choose to stop taking hrt. Health concerns (of various kinds) is probably a much more common reason. However, you're right that it's poorly documented. I've seen a few vids on youtube of trans men and detrans women and nb afabs going off T, and I follow a few blogs of other detrans women who sometimes report about their going off T experiences, but I can't recall any of them mentioning hair loss or re-gain.
Ending up in radfem territory is probably unavoidable when detransitioning from ftm, cause that's literally the only community that openly accepts and supports detrans. They're the only ones who are not afraid of or trying to use people like me. Although I'm personally not too offended by the shudders coming from the trans community upon my ghastly entrence in their spaces... So, most detrans women are radfem ("terfy") and are probably the category of people most likely to document a going off T journey, cause we tend to be excited about it. So they're probably your best source, even if you don't like them. Although, their "X time off T" vids/blog posts don't tend to be very political. If I stumble across a balding one who blogs/vlogs about it, I'll nudge you.
About dysphoria I won't be of any help for you, cause the longer I'm off T, the less dysphoric I get. Cause I'm dysphoric about my male traits from transitioning, not my female traits from mother nature. Used to be the other way around when I first started taking it. So now I'm excited to see my hrt changes reverse back again, even so much that I begged my endo for androgen-blockers which speed up the reversing by really a lot. So... that I've lost the majority of my body hair, smell nice again, have super soft skin, and am starting to see my curves getting curvier already... is mostly due to the blockers. Fascinating those work on afabs!
But as just a general suggestion, maybe if you focus on mentally holding onto the T traits that are permanent (such as voice and beard, for example) and the positive things about being off T (like the glowy skin) that might be helpful for you. Cause I do that in reverse.
However, as for my hair. It was (shoulder length at that time) in such a bad state that I decided to just get it all shaved off, about 2 months ago. I barely had a quarter left of my hair by the time I got it shaved, and it kept breaking off into a more and more unsightly mullet, despite me taking very good care of it. Eventually it was so thin I could see my scalp right through it. So you've heard of hot bald dudes, get ready for hot bald chicks! But I understand you not being ready for that kind of leap regardless of who else looks good with it. It certainly took a lot of guts for me to do it. And I still cried at the hair salon.
But as I kept shaving it since, cause it turned out I actually like being bald and it's so easy to maintain, I can't quite keep track of if it's gotten any better in quality/thickness or not. Only that the stubble that grows out between shavings still appears to be very sparse and thin and I don't think it would look good grown out yet. I think I might try to grow it out again by spring or summer if I'd feel like it, but we'll see. I don't take any sort of meds for it. Mostly cause I'm not actually too bothered, and probably wouldn't mind staying bald.
I might wanna try some very short hairstyles at some point just to check the hair situation though, but I wanna give it more time off T first. Also I'm not looking forward to having my damn hairline showing again as it grows out. Cause it got very masculine with a very distinct "M" shape from my time on T and thanks, I hate it. Doesn't go with my femme spirit.
