Family can be stressful!!
Don't be afraid to take some distance and have boundaries, at the end of the day we need to live our lives and if that requires not seeing some people then that's alright in my opinion.
I have family members that don't care much about what is going on in my life most of the year and then all of a sudden start handing out grief when they feel like it for various reasons at random.
I'll be over here living my life!!