*Hugs* I can't offer up any useful advice,especially not knowing your brother at all, but I'm here to listen. I have an acquaintance who is transitioning too, and knowing how messed up this guy (now girl) is, I have to wonder too for similar reasons. But all any if us can do is be supportive and hope for the best.

My 19 year-old goddaughter came out as genderfluid last week, and that wasn't a surprise at all. I'm proud of her.(I've been told it's ok to still use female pronouns currently.)

I hope it all works out ok for you and your sib.