tbh I'm aroace and I never plan on telling my family, they won't understand it and I just don't think it's worth it however if you think they'd be understanding and support you then I'm sure it's worth it! just consider the possible outcomes but coming out as nb is important I think, especially if you use different pronouns or want to change your name. for your own comfort if nothing else bc I can't imagine it feels good to be deadnamed/have the wrong pronouns used I wish you luck!!
I’m leaning towards waiting, but that’s just my personal opinion. I think there’s nothing wrong with going through changes or phases in one’s self-concept, but depending on how informed and accepting your family is, bringing them in too early could risk them thinking “it’s just a phase” or that you’re confused or noncommittal