Boyfriends mom doesn’t like me

hey guys i just want to know if i’m in the right or in the wrong in this situation but my boyfriends mom doesn’t like me, i’ve never done anything for her to not like me i think she doesn’t like how much time we spend together (which compared to most high school couples it’s really not a lot of time) we hangout almost every weekend or we’ll skip a weekend if we have stuff going on but he lives about an hour away so it’s not like we go to the same school or it’s easy to make plans on a weekday we really only see each other friday-sunday and i mostly go to his house and she doesn’t really try to get involved with him that much even before we were dating she kind of just doesn’t talk to him, anyway i’ve always wanted a good relationship with my boyfriends mother to me that’s important but she basically is making that impossible to happen 😕 i hear stories from my boyfriend and his friends of what he was like before we dated and he was doing really bad in school and getting high in school everyday and stuff like that and before i said yes to go out with him i told him he needed to get his shit together and i’ve been helping him do better in school almost everyday and his mom knows that, he told me today that earlier his mom was like “she’s not gonna be with you in 3 months so stop putting in effort for her” and she also said “genevieve’s (me) family is rich YOU aren’t so get that through you’re head” we are a wealthy family but i was always raised to treat people equally and i never bring up how much money my family makes or how expensive the stuff i have is to really anybody and when we first started dating she said to my boyfriend “you go through girls like underwear you’ll be done with her in a month” and he was like that before but we’ve talked a lot about that so that isn’t a problem, and then when we had been dating for 2 months she said “you guys aren’t gonna last for another month” we’ve been dating for 5 months now (i know it’s not long and i know most high school relationships don’t last but i wish that she would try to create a relationship with me while we are together even if she suspects we’re not gonna last) he’s tried to explain to her how school is stressing him out and making him depressed and being with me and having me help him makes it better but she’ll just say “you’re not depressed” or “school isn’t that hard for you to be stressed like you say you are” i do understand he lives under her roof so it’s her rules but she doesn’t talk to him for him to even know any “rules” please comment you’re opinion, thank you!