Mother and Father Uninterested

Hi fellow wedding planners,
Recently I've been feeling down about my mother and step father when it comes to my wedding. To preface, my mother and I were always close, or so I thought. When I got engaged to my boyfriend of 4 years she didn't care or call right away. When I talk about the wedding she zones out, doesn't reply to my texts, doesn't ask me questions about the planning, won't go dress shopping etc. My step dad down right doesn't approve of it at all (even though he likes my FH) because his first marriage was at 18 when he got his ex wife pregnant. He just assumes all marriage is garbage and I never should get married. My little sister who is my MOH tells me my parents say poor things about me in regards to the wedding when I'm not around. She lives at home so she hears everything bad they say. I work very hard, I have one degree and I'm working on furthering my education, I don't get into trouble, ask for money, I help them when they ask, support their hopes and dreams, and so much more. My mom tells me all the time I was the easy child and she wishes my siblings were easier to handle. There's no reason she should be so resentful of this situation. I even moved out right away after graduating from high school so she's not missing that connection of me living at home. To further the blow my step dad will only call my FH my friend when introducing him to friends and other family. Its so rude and makes me sick to my stomach when he does things like that. Does anyone else have problem family? Any advice to ignore or address the issue?