EMDR can be done remotely. It is not ideal but I have continued to do EMDR with my T since the lock down. Although my T also specialized in DBT and CBT, he required me to to do a separate DBT class to assist with emotional stability. I took classes for a little over 2 years and am now continuing with the graduate class. I do not have BPD but I have gained a lot of skills from the class. My T also adds DBT techniques to sessions and required me to do the diary card each week. I know you have tried meds, but it may be helpful to give it another try. It took awhile for me to find the right combo but I am currently on 3 different meds. Even if you use meds to help with just one of your conditions, it might make it easier to focus on the other issues for awhile.