help plz urgent

I want to tell my friend about me being little/switch and tell him about ddlg but idek how like where do I start? I don't want to give him the wrong idea about it because I don't practice ddlg sexually the majority of the time and I don't want him to thing that? I get to see him like in a half hour so the faster y'all respond the better 👌🏻 thank y'all