I keep doing that too! Thinking back to these little things and going “oh, hey, yeah”. The dresses thing happened with me, too.
i think it was because i was old enough to realize that even though i liked dresses, dresses were for girls? and i think that was when i started being uncomfortable with them, when that clicked
i still like dresses honestly i like them better than most clothes, i just wish more of them were high-necked and long-sleeved enough to let me wear a binder under them. it’s easier now that i know i have to pay attention to how i feel that day and i also can realize that anyone can wear dresses regardless of gender if that’s what they want