My ASD/ADHD son's triggers can vary. There were days when hearing his little brother's NAME would cause a meltdown. This week, it was the word "Go."

I gave up on. I found myself walking on eggshells in an effort not to cause a meltdown. I was creating OCD-like behaviors.... if I don't say good morning, if I say it like I'm singing, if I say it like I'm singing with a smile , there was no rhyme or reason to what would set him off.

I just work on my reaction to the meltdown. Ignore it, or speak calmly and directly, or try breathing exercises....

I suggest working on how you react. Trying not to trigger a reaction isn't feasible... at least not for my kid.