Move away from gender, when trying to sort out your life, and your feelings.
Why?
Because we all have our own very personal idea of what gender is, and this is why it is confusing, you dad will have his idea of what man and woman are, and so will your mother, any divergence in this, is tolorated on a CIS scale, the being, had a vag from birth so, having a beard means beard lady? but still lady.
Your not trying to argue this, your trying to exsplane why making changes to your life are possibly for your benifit. Changes with a gender perspective, but its the foundation of these changes you need to get across.
Baiscaly we tend for the most part to argue about what we want to do, and WHY we want to do it gets overlooked.
So when possible move away from gender, its a little more paletable. Its the difference between saying.......
I want to dress like this, because I feel like a man or woman.
And I need to dress like this, because not doing so causes me to feel like this, regardless of wether im a man a woman or a green haird dog, not doing said thing means I feel like this, thats is why.
At first my dad didnt aprove, because I'm not a woman, or that thats for girls and im a man. And placed upon me HIS interpretation of gender. This argument went on and on, and would of continued to go on, because we both had very different ideas or gender. So making it about gender was going nowear.
He couldnt accpet that I was a woman, but He culd accept that I had feelings, he knew what sad, depression, and emotiones ment.
So for me, and I hope for you, talking about yourself as a person and how, not doing and/or being exspected to do certian specific things was making me/you feel.
One of the things I could say to my dad was,
Would you continue to do somthing if you felt like this? (they might start up about boys and girls)
You need to get it though to them your not talking about boys or girls or even trans, and that your talking about you a person and an individual, and how you as that individual FEEL.