Alison, I truly respect how you acknowledge you don't have all the answers (or even a preliminary set of suggestions), and you are seeking out ideas from your readership.
Adding one of my own thoughts: we could stop raising children under the assumption that they'll automatically be adhering to the rigid heteronormative binary that our society is always so quick to force upon all of them. Couple that with the universal principles of nurture+discipline that Sterling had suggested, elsewhere in this Comments Section.
Oh, and our societies could also quit normalizing ableism, while we're at it.