PTSD+ED: Suggestions on what to do to satisfy him

My partner is a disabled vet. We have sex very often, even without him being fully erect. He says he still enjoys it, but I can’t help but feel like I am doing something wrong. It feels unfair that he gets me to where I need to be but I can’t get him to ejaculate.

We have been sexually active with one another for about 8 months and in the beginning it was fairly easy to service him to completion whether he could get it up or not. So basically, what I am trying to ask is for suggestions or advice on what I should try, is he just not sexually attracted to me anymore, what I can do to help the situation, and really just any advice/education I can get regarding PTSD, ED and what to do in the bedroom.

This is a super vulnerable situation for me and I am well aware it is for him, too. I get in my head about it and I feel crippling guilt, embarrassment, shame, and resentment toward myself that I just don’t ‘do it’ for him anymore which in turn, turns me off and continuing sex is off the table for me emotionally and physically despite him wanting to continue.

I don’t know… I am getting a lot of mixed signals from all sides. His words, his subconscious body language, his actions…

Or maybe I have just lost confidence since confidence is the sexiest thing a human being could have.

Thanks for reading my little rant, everybody. Im open to any and all opinions, solutions, suggestions, ideas, advice, etc, etc.

I just need some help.