Hi MoreGuilt,
Welcome back! I'm really sorry that you are having siuch a struggle right now. It sounds as if you feel more content in being NC or VLC, and yet there are those around you who are pressuring you to do something different. Only you can truly know what works well for you and is most healthy for you long term.
As I read your post, there does seem to be this push/pull going on, yet I'm not sure who is doing it? DH and son? Your disordered parents? You? It can be all of these to be honest, because it is truly a great struggle to come to a true sense of peace with where we need to be. It is not an easy choice for you to make, nor would it be for me if I were in your shoes. My uBPDm had so many expectations and I felt them heavily. Then I began to realize that I also projected those feelings of expectation upon my DH too. An ironic twist that irritated me. Now I am allowing myself greater freedom to realize I can choose for myself and not feel pressured to yield to someone else's wishes. Obligation still tends to catch me and trip me up, but sometimes I do better.

It is tricky but you can find that place too.
Do you think obligation is driving you to reach out to them? I will include a link for you that may provide some helpful understanding. Go down a bit into the article and look for the section "Attachment Status of Children." You may find some validation for you there although the entire article is good.
https://bpdfamily.com/content/have-your-parents-put-you-risk-psychopathology Wools