Too soon?

My boyfriend and I are going to be 7 months soon and he is inviting me over to meet his entire family (already met his parents) for thanksgiving day. I don’t think it’s the right time to be meeting all of them but he really wants me to go with him. For reference, I am 18 and he’s 20. I don’t want to go because I think it’s too soon for that. Thoughts?! Please and thank you.