I (19F) and my bf (19M) said that he most likely won’t attend my fathers funeral or be there for his final moments. I’m not sure what to do?

(sorry if some words don't make sense, English isn't my first language) I (19F) have been very stressed because my dad (57M) has blood cancer and only has a few months left to live, I expressed how I felt about the whole thing to my boyfriend and asked him if he would be there for his final moments and attend my fathers funeral. For context my boyfriend moved to a different country 3 months ago for temporary work, we have been together for 3 years now but we've known each other for much longer than that. So I was pretty crushed when he told me that he most likely won't attend my fathers funeral because he doesn't want to leave work and give up all his hard work, which I understand, as he has been working very hard to get where he is and I don't want him to stop what he loves to do and possibly 'wreck his career' (his words). But I still feel very sad and upset about the whole thing because I thought he would attend my fathers funeral when I brought it up, as my father wanted my boyfriend to be there for his final moments and his funeral, but now I have to break the news to my dad that his favorite son-in-law won't be there for his final moments nor his funeral. And I'm not sure what to do. I've spoken to my cousin about it and they said "a man who won't be there to support his women and his father-in-law is not a man you should be with, you should only focus on your father at the moment" while my friends are saying that he should stay and work and support us from a far, and I know where they are both coming from but I dont know what to do, as I do want my boyfriend to see my dad one last time for my dads sake. Someone please help me and tell me what I should do.