I'm bisexual

Hey guys so I feel like I should have known this a long time ago, I probably did but was denying it but I have recently discovered that i am actually bisexual. But I'm really scared about coming out to my family. It's not my parents I'm worried about rejecting me, it's my aunties, uncle and grandparents. They are all extremely homophobic and I feel like I would be disowned or told that it's just a phase as I would be the only bisexual one in the family.

Any suggestions on what I should do?