Depression from helping lover & being spread thin. Is this relationship even worth it?

I spread myself too thin to help my lover and now I'm depressed lol it sucks.. he has a part time job, participates in church, does a church class, and a really intensive 8-week university course that is critical for his graduation. Meanwhile, I work a 9 hour job, serve at church, participate in church events, helping my little brother with college applications, working overtime against my will at work, and am recovering from COVID. He was really overwhelmed with the university course so I offered to help him. It was just too much: I stopped sleeping and eating on time and sometimes just didn't eat at all. and after the 9+ hour work shift, I'd spend 5-7 hours a day on the coursework right after. I'm burnt out and am having depression, and when my lover saw that I guess he started feeling guilty that I'm helping him when it was not my intention. I also told him that I feel stressed out and numb. But since the coursework is starting to die down, he is telling me that he doesn't need help anymore.

I dont know, I just feel really sad. And I guess he never really texts me anymore to ask me how I'm doing, all he messages me about is his university class. Not even by text, but by the shared google doc that we were communicating through to delegate the assignments. Like this stressful situation made me question the longevity of whatever this relationship is, and if it is still worth it to continue this.

Nothing much but a rant, but is the relationship even worth it anymore? I feel horrible

And is it anyone's fault? I cannot tell anymore