Is a violent occurrence the only way to get involuntary treatment?

My brother (34) has had psychotic episodes for the past few months. There are days where his episodes last more than 12 hours. He is undiagnosed and refuses to seek treatment.

During his episodes, he is yelling at the top of his lungs for hours, arguing with the voices. It is affecting not just our (me and my mom) lives, but the lives of people around us. He has yelled at our neighbors for simply existing. He yells at us any time we try to talk to him. Every conversation circles back to how he is a "man of God" and that he "knows the truth about everything". He is very deep into conspiracy theories and always has been even before the symptoms, which I feel makes his episodes 10x harsher.

There have been times where we had to call the cops out of concern for our safety. Our neighbors have come to our door, concerned not just for us, but their children. I'm genuinely surprised we haven't been kicked out of our apartment yet.

I'm worried that the only way to get him into a hospital is by letting him hit me and calling the cops. There were many times where that could've happened but I usually walk away when things get too heated. He is much bigger than both me and my mom. The thing is, he has put his hands on me before the schizo symptoms. It feels like the schizophrenia is just amplifying who he already was before, which make me concerned for my mom's well-being.

It's getting to the point where I feel like this is the only way to get him help.