My understanding is get DR. Anyone else?
Make it a rule to NEVER EVER answer within an hour, preferably longer. (unless real emergency) use that time to calm down and think about your SHORT answer.
If that is hard, Use airplane mode on your phone.
I do it all the time. Especially if I have just answered her. That way I avoid discussions.

GAL, find a workout routine now that gyms are closed, fix something on house, do an activity with kids, find a trail to walk.

Me: 34
Stbxw: 30
D:5 D:3
Mini bd: May/June 2019
Married: Aug 2019
BD: 6th Dec 2019
OM Confirmed: Feb 2020
March 2020: I filed for D
Waiting for D to be finalized and W to move out end of January 2021