Prediction seems easy when we benefit from hindsight, but it can be a very deceitful exercise.
Many (most?) trans women who transition later in life share a common narrative of dressing as girls, playing with dolls, etc. from a (sometimes very) young age. In my case, for example it began at around 4 yo. In the meantime, dysphoria just kept undulating, with higher and higher waves, until my forties, when it became unbearable and I decided to transition.
However, we have truly no clear idea of how many kids who dress as girls or adopt other feminine behaviours as kids will in fact later suffer from gender dysphoria and require transition. My guess is that many of them will fortunately outgrow those feelings and behavioural patterns. And we are not even close as having biological markers for this... If they even exist, that is.
So perhaps for the time being, as others said, therapy and eventually puberty-blockers might be the most reasonable approach. I wish I had transitioned at 5 yo, but I'd be really pissed if my parents had made me transition just to realize, as an adult, that I am actually not transgender but instead just liked to play with dolls as a kid.
Sarah
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