Frustrated and feel alone

[Kronky]

Hello everyone,
I have been in a relationship with someone with BPD for 3 years. He was officially diagnosed 1.5 years ago. I am older than him, by 18 years and lately I feel more like a parent than a partner. So much of my life is revolving around him and making sure that he gets the help he needs. He is very open for support and will do any treatment that I find for him, however I then get the brunt of his frustration. I have been doing a lot more research on the condition and trying my best to help. He is having a crisis right now and I know that I am not at fault, I know I can’t fix him or control how he feels. I just don’t know how to manage my own mental health. Just looking for advice on how other people handle everything.

Our objective is to better understand the struggles our child faces and to learn the skills to improve our relationship and provide a supportive environment and also improve on our own emotional responses, attitudes and effectiveness as a family leaders