Hi
I've only just joined and don't know if you do any of these but we have to do countdowns for everything. What I mean is for example getting dressed we say in 10 mins we get dressed, then 5 mins, then 3 mins and then 1 min. We've done this for a few years now and it does help. It doesn't stop the "nuclear moments" as I call them but it does help.
Also, my little man has sensory issues and getting in and out the bath and being undressed can set him off bouncing, jumping and flailing his arms if we made him get dressed straight away he will go nuclear. The OT explained to us that his pain receptors are wired differently so to our skin what would feel like a change in temperature to him is a physical pain.
Also after a nuclear moment, and yes I too have been battered black and blue on numerous occasions, I hug him really tight and whisper in his ear. While I'm doing this his body goes limp and he has a big sigh and as soon as he's done that it's as if nothing has happened and he is back to normal?
Hope this helps even just to know you are not on your on your own.