Lately, I’ve really felt like I can see my partner disappearing into the general symptoms of having bpd. This is their first adult relationship which has lasted well over a year. I don’t feel like they realize what’s happening. So I wrote them this note in my phone, just trying to formulate what I wanted to say, but I wanted your opinions before saying it to them. How is the best way I can approach this? How can I support them and help them the most effectively? They are on a waiting list for therapy. We have been through a lot. Here is the note:

I feel like lately when you’ve said “the personality disorder is just apart of me” that it’s different from the beginning. You used to always tell me, for instance, “[this thing I do] is apart of the bpd and I don’t want it to define me” but lately it seems like you wanted to lay down and *be* the personality disorder. That’s not like you. I felt like maybe I should bring this to your attention, and ask if you’re okay and if there’s any way I can help you and help support you during this time. 
When I met you, you knew you had bpd and wanted to be able to identify it apart from yourself. You did for a very long time, but lately you’ve been so different. It feels like you are just giving in fully. It feels like you forgot who you are, and confused it for the personality disorder. I know this is hard for you. I want to help so badly. I don’t know how. Please tell me if there’s any way I can help you through this. I’ve known you for so long and this is not you. I forgive you for everything, but I want to see you get better.   

Is this the right thing to say to someone who is going through this? I would like some help rephrasing if not. I have sincerely good intentions. I just feel like they don’t see what’s happening. I want to tell them. I want to be as constructive as possible. I’m sorry if any of it comes across as tone deaf. That’s why I’m here to get more opinions.