I have feigned surprise when my RAH can't get in touch with me for something that he needs immediately and he may be angry but it passes and depending on how dire it is he ends up taking care of it himself or goes without. I think this happens to all of us, although we display different coping skills, kids and adults.
KWYM about acting like a child and not a grown up. It's kinda worse since with a child you feel like they will eventually learn by you helping them out and eventually be on their own, it seems not so with A.
The more I work on myself though and let my RAH fend for himself the better for me and for him.
I've started to understand myself better and seen where I have "not grown up" and became dependent on my RAH in some ways to avoid facing some realities of my own.
You can step away from the gate, one step at a time. You never know what each step brings except for being farther away from the gate. It's like what they say about one door closes and another opens.
(((HUGS)))