I can relate to OP. If I skip the holiday, I’ll hear about it for months after, but if I go I spend the whole time counting the nanoseconds until it’s over. Unless you are willing to go NC, there are no easy answers.

I plan distractions during the day to get me out of the house. Go for a walk, find a quiet room to hide/recharge in, etc. Last TGiving, as an experiment, I went into another room to see how long it would take for someone to come looking for me. They never did and I had a nice quiet hour.

Make a plan for your mental health and work the plan.