Oh, I really feel this, and know exactly where you're coming from.
My Mum was also the glue. Things started to change in around 2018 when cancer sapped her strength and she gently and kindly bowed out of the main event - we'd do a short visit and then DP and I would go home and host for my adult kids. It was still lovely but very different.
My DP died unexpectedly just shy of three years ago, and since then everything has just sort of unravelled in every direction. Kids do their own thing, and we've all talked about how we feel that we go through just enough motions to connect, be loving to each other and then respect each other's needs to quietly lick our wounds as we see fit.
This year, my DF and SM, in their 80s, separated for long complicated reasons to do with her badly managed mental health by the MH team. Won't go into the frankly unbelievable details.
So for the first time in over 40 years, I spent Christmas with my DF. We tag teamed a small Christmas dinner cooked on a portable two ring hob, a combination microwave oven and an air fryer - and it was great. Kids popped over for an hour - we had a sherry. Watched the King's speech. DF slept through Some like it Hot. I went home at about 7. He lives in temporary sheltered accommodation and is frail. My place is too small to host anything other than lap dinners.
But it was oddly lovely in its way. It's given me a bit of an impetus to think about building on it next year, when things have been properly sorted out - touching wood that DF hangs in there for another year or hopefully more.
I've learned so much these last few years. Especially not to sweat the small stuff.
Sending love and solidarity to all of you on this thread 💛 sometimes muddling through is surprisingly rewarding, even if it is so very bittersweet.....