I am so glad, you found the forums and that your BP is agreeing to help. Sounds like you are already doing so much research. Excellent! Education is imperative so you can fully understand BP and the long road of recovery. Buckle your seat belt, it may be a bumpy ride and it is no quick fix but there is hope for remission. Dr. Marsha Linehan, the creator or DBT, is in a wonderful video on YouTube called, "Back from the Edge." I found it really helpful. Eventually, I had my BPDh watch it as well.
One note, and you will see Dr. Marsha mention it in the video, (she is the creator of the DBT therapy for BPD) she says success depends on a therapist who truly understands and is trained in BPD. Also, see what may be available for you individually. You will need a supportive, safe place of guidance and perspective.
Wishing you all the best! Stay hopeful and learn, learn, learn.