Maybe just tell your uncle that you do not care for him period! and from this time forward other than a polite hello and goodbye that will be the only interaction you will engage in.

Boundaries are certainly not easy to use and maintain. I have numerous relatives I have had no choice but to do this.

Your well being is the most important thing.

If members of your family have a problem ? a simple “you do not have to understand my reason for removing him out of my life as much as possible , because I deserve the right to take care of myself “ I hope you can accept this but if not I’m sorry but I will not change my mind