I know this is really hard and you are facing lots of challenges. Sorry if I was a bit direct, it is my way of helping you I always figure that I have enough people around me in real life who validate and express opinions on my situation etc, the thing I have learnt here is that my feelings aren't always right. I'm not saying you are wrong, but I just wanted to present a different way for you to achieve your goals.
I'm neither going to tell you to give up or continue, that is up to you. A big part of you obviously still wants this or you wouldn't be here trying, I just really want to help you get there. Likewise if you decide you're done I will support you with that decision.
Have you thought about keeping a solutions journal? Noting down when something works and what factors helped you achieve it. It can be quite satisfying and can help you do more of what works and less of what doesn't. I think you need to try some new approaches as at the moment the two of you are still butting heads. What can you do in these interactions to make them different?
I always figure that I have enough people around me in real life who validate and express opinions on my situation etc, the thing I have learnt here is that my feelings aren't always right. I'm not saying you are wrong, but I just wanted to present a different way for you to achieve your goals.