My SO'S family!

I get to meet my SO'S parents soon and I've been freaking out lately, and I get to meet his sister and its driving me crazy along with him telling me I should join dance and he's trying to help me get over My fear of dancing in public and things but to top it IM MEETING HIS FAMILY!!! my life is already stressful enough but I love him so I want to just im super stressed about it...any advice?