I went full time after 4 months on HRT. I was consistently getting weird looks from other guys in the men’s restroom at that point, even while presenting male. More importantly I simply couldn’t stand to live as a man any longer. I think the HRT made me feel an increased urgency to transition.
I’m a pretty rare case though, and I know that most don’t transition nearly as fast as I do. Some people can be on HRT for years without going full time. But based on my experience it can and does happen very quickly sometimes.
