I'm the same. Even my 'closest' friends are still often held at a distance. I found it extremely hard to let my T in fully and spent a lot of my time in sessions speaking about surface level things. That has changed alot in recent months. Not sure why but I think it had something to do with my feelings towards her and the realization that in order to progress I had to open up. I was also able to explore the difficulties I had in trusting her. It's as scary as hell to let someone in and be vulnerable so it's totally understandable that you are scared especially if you have been let down a lot before. I am completely trusting in my T's abilities to do her job but also know that she is human so not infallible which is nervewracking. I am hoping that by opening up and placing my trust in her hands however that we can navigate this crazy therapy world together and somehow it will enable me to come out the other side intact.

Might be an idea to try bring it up again and emphasize how at times you are feeling like you want to quit and coming up with excuses not to go etc. I understand it makes you feel needy but that it's okay to have needs and right now it sounds like you need to explore this more. He might not be able to tell you the things you want him to say to reassure you but might help even exploring what those are or why you feel like that.