Anybody familiar with a partner with BPD?

I (M31) her (F29) have been together for almost a year now, but she got diagnosed in August with BPD and its been a rough road since. How do you all deal with splitting? One day I am the best person in the world and get all the attention. The next I’m the worst person ever and im blocked on everything and shes super distant for days or weeks at a time. Shes not seeing anybody else and that isnt a concern.. its solely the BPD and its hard to navigate. I love her very much and dont want to give up and walk away but I am also over feeling worthless more times than not and getting ignored for days on end.