Stabilization and sense of safety have to come first before any other demands or pressures are put apon a sufferer.
Asking for information, clarification, communication, consideration, action, all these things can be felt as if they are a demand, a pressure, a "too big" ask.
The only way I have been able to engage and develop a beautiful, trusting, healing relationship with my own suffering SO, (also a sufferer myself) is by putting sense of safety, understanding and respect for his limitations and sometimes hypervigilant and reactive "boundary setting", positive regard and understanding of; needs for space, triggers, his process and pace, my own self protective boundaries - compassion, understanding and forgiveness for both of us, first.
Unfortunately if you don't have the same condition, you will be needing plenty of insight and support in the supportive, understanding creation of yourself as his "safe person", which you are doing here but it's a big task and your mental well-being
comes first, no hope in helping him with his, otherwise.
Of course if he lacks self-awareness, maturity and self-responsibility, there's nothing you can do to fill that gap or compensate, just model self care, keep putting your calm and kind boundaries in and work on lots of kindness to yourself.
You are awesome
@Hojay ! Deep down he knows it but his shame and sense of inadequacy is causing him to lash out at you.
It's a very emotional response and not something you can calmly and rationally explain to him, that will just activate it more, he'll feel your being condescending and feel belittled and gaslit (not rational, I know but that's the nature of this beast).
Instead, fun times; joking, flirting, eating yummy food together, watching something "safe" or his choise, step into the world of "what makes life worth living" for him, any hobbies? Passion-invoking topics, you can listen to him talk about and listen with interest? etc etc, get my drift?