When it comes to parenting all I can say is that there is no way you won’t screw up. What really matters is to have these moments of genuine unconditional love, and they’ll take that with them into the world.
I’d recommend giving the series Pose by FX a try. It’s the only media I have ever watched that managed to express what gender dysphoria is like to people who don’t experience it.
Feel free to ask questions. If it is more comfortable to you, I am also available for pm on matrix.