I recently did the same. Considered going no contact and cutting them out entirely but decided to go very low contact and basically made myself unavailable - prioritizing myself fully and emotionally severing ties (to the best of my abilities). When I interact I keep things stoic and surface. I've kept lines open for my brother to send me pics of his cat but I told him I didn't want to "catch up" and don't plan to open up emotionally anymore.

It was hard as fuck. That was a scary couple weeks when I started putting up those walls. And the decades of internalized rage I had to process all on my own, and the grief! The deep sadness.

You're not alone in this. You'll be surprised how quickly things settle back down if you commit to feeling it all and taking care of yourself, assuming you're in the middle of the storm. All the best to you.