Boyfriend(16M)'s parents don't seem to care/worry about his wellbeing, how can I(16F) help him/how can I change this?
context: My bf is 16M, I'm 16F, we've been dating for 3 years now and met outside of school, I have a good, but not close, relationship with his parents and they approve of our relationship, but often put my boyfriend down in multiple situations (they belittle him, and basically think he's not worthy of being my boyfriend, think he isn't smart, isn't talented, etc.)
Recently, I've been growing a slight resentment towards my boyfriend's parents due to their apparent lack of care for my boyfriend's wellbeing or health. We're both still considered minors in my country, and are in the same high school, about to graduate. Currently, we're in a long, crucial exam period that will determine our college apps, uni offers, etc.
My boyfriend gets sick often - most of the time it isn't anything serious, but he always tells me about his symptoms, and because I get worried, I end up pestering him about medication, rest, as well as going to the clinic/hospital if necessary. Throughout these incidents, there have been multiple times where he tells me that his parents downplay his sickness, saying things like "its just a simple flu" "just go rest", & hesitate to bring him to see a doctor (his family is financially comfortable, his parents have a stable, good income)
Today, he complained about symptoms that I consider severe: loss of taste, lack of appetite, body pain, head ache, stomach pains, dizziness, sore throat, flu, etc, and he has an exam tomorrow at 2pm, while my exam ends at 1:30pm, so I won't be able to care for him or help him before his exam (the moment my exam finishes, he will be going into the exam hall)
The thing that frustrates me the most is that his parents downplayed his symptoms, calling it a "common cold" and told him to just "go rest" again - this exam period is crucial and he still has multiple exams to take after tomorrow, so I don't understand why it was so hard to bring him to see a doctor - they ended up delaying and only decided to bring him tomorrow, right before his exam, because he suddenly got a slight fever
I'm just really frustrated with the lack of responsibility from his parents, and I have a feeling that they don't sincerely care about my boyfriend's health - I have no idea what I can do as a minor myself, other than bringing medication to school for him, and helping him in school - When he goes home, I'm completely helpless against his parent's negligence - should I just text his parents and voice out my concerns, or would that make them upset at my boyfriend/feel like my bf was talking bad about them to me? I'm also worried his parents will end up disliking me and stop accepting my relationship with him
TL;DR! My boyfriend's parents repeatedly disregard my boyfriend's health and ignore him when he speaks up about it, how can I change this?