He sounds always busy work 8 to 22,6 days a week(I know he is lying)
That would be a dealbreaker for me.
I know it hurts A TON, but he is giving every sign to you that he cannot be in a relationship right now. Therefore, it might be best for you to summon all the energy you have and work towards moving on. He may come back when he's fixed up, but that may be years from now. And, in the present, even though you both really care for each other, you're not on the same page, which means you need to do what is best for you, not him, because right now, his PTSD is taking precedence, and he needs to focus on that, not a relationship.