More thoughts from someone in a not dissimilar boat.
As I said, my DS is autistic, but we suspect DD2 is also. We're just at the very beginning of the process with her, though.
From the very beginning, people have commented on how calm I am with DS, but I just found it easy, because I knew from the start that it was something he couldn't help.
For some reason, it was completely different with DD2. She just pushed my buttons in a way I couldn't manage to get under control and I found her impossible to deal with, even though on the face of it she's not as difficult as her brother.
I'm lucky enough to live in an area with really good parenting support, so did a self-referral to frontline CAMHS, which referred me to a parenting coach.
Even though I had done all the reading, knew all the theory about therapeutic parenting and dealing with ASD children etc, I still needed that support to get my mindset straight to deal with my DD.
What I'm trying to say is: it is worth getting a diagnosis. Pushing CAMHS to proceed with the referral is really important - even though it doesn't mean his behaviour will change, your understanding of it, and your relationship to it will. Plus it gets you access to lots of peer support in the form of other parents with ASD children, which is invaluable.
It's also possible (likely - your life sounds really tough!) that you could do with more support for yourself. Whether that would be in the form of antidepressants or counselling or a parenting course or whatever probably depends on what's available.
Hand-hold and
from me. You're being a
even if it doesn't feel like it, and it won't always be this hard.