Hi RollerMom,
I too struggle to set boundaries, so I'm not sure I'll have concrete advice for you here. I too say I won't tolerate certain things (him shouting, calling me an idiot or childish, throwing an object on the floor...) but he is just going to do it anyway.
If he enters into a rage, I just walk away but then he completely ignores me and my hurt feelings.
When his episode is over, most of the time he is going to feel remorse and apologise and he is still gonna start again next time he is triggered.
I can't imagine how hard it must be for you having your son impacted by it also. Just know you're not alone going through this

I back you up here, if anybody has concrete examples about efficient boundary settings, it would be more than helpful
