This reply is also months after your original post, but it may be helpful to review “Parent Actions That Help” on this site for ideas about how to solidify your child’s feeling of being supported at home. While no one can protect a child from the ugliness that exists in the world, having a parent who loves, supports, and celebrates who they are protect them from being affected by negative messages they may receive outside of the home.
The reply above demonstrates one important way to show support: finding local events such as LGBTQ pride events sends multiple messages to your child: you are taking action to demonstrate that you support and celebrate who they are and you are helping them see and connect with a community that may not be as visible to them in their school or neighborhood.