Hi, Charlotte:
That's SO excellent that some of your family members are on board with your true identity and desire to transition.
Give your parents time. Of course, you understand that they have to make a big-time, major-league paradigm shift. That's hard to do. Some people have a real hard time with it.
Stay open to them. Try not to argue with them. Give them plenty of leeway and sufficient time. They'll come around. Keep on loving them. Love conquers all sounds trite, but it's often true.
Good luck!

Lacey Lynne