Hi!, welcome to susan's place!... uhhmmm... I'm not the official greeting girl but anyways.
It's great that you're beginning your transition with the support of a family member, that's one of the most important parts about this whole ordeal to become easier, didn't you feel like the world would end and nobody (not even your family) would love you because of being transgender? only to realize that they will always accept you no matter how you present? I sure did haha.
keep going on, it's a looooong hard road but absolutely worth it.