How do I get better treatment for my parents from the nursing home, my father is in, without upending their lives?

My father has been in LTC since the fall of 2019. The facility was 'not for profit' and owned by the Catholic diocese at the time, and through to spring 2021. He got through a year of no visitation during the height of COVID-19. It was misery for him and for my mother, but they did it.

The diocese sold the facility to an LLC that is buying homes all over the northeast and mid-Atlantic. I'd read so many horror stories about corporate-owned nursing homes but it seemed okay at first.

Then a new administrator was brought in last summer and, because my mother and I had pointed out flaws and failings in my father's care, he made a point of introducing himself to us and showering my father with special attention; donuts and coffee and trips outside. He gave us so many promises about all the good things to come... and if half of them had come true, it'd be heaven.

But it's constantly 'we hired X and X this week', 'give us two weeks', 'give us a month', 'we're getting there...' and they're saying that about things like better food and better preparation of food. And they seem to be hiring countless managers and supervisors, who don't do much with resident care, but precious few CNAs.

There's a new Director of Nursing now too, who actually told my mother to talk to the nurses if the treatment for my father's contracted hand isn't done twice-daily like his care plan says, that she can ask them to do it. That's not my mother's job, is it? And that's not even counting that the primary daytime nurse on his unit said she's not qualified to do the treatment.

They always ask "how do you know that?" and "who was it?" and don't seem to listen to anything my father says, and it feels like they're trying to strong-arm us into silent acceptance of whatever they say and offer.

And now they've hired a new dietitian who switched everyone in the facility to a different nutritional supplement, passed by the nurses, to 'encourage residents to eat more of their food' instead of drinking the supplement they'd been putting on food trays. They didn't notify anyone of the change, and there's a running theme among the residents that they ask each other in the hallways what the meat with dinner might've been, then discuss how they couldn't swallow it so... the food isn't encouraging but of course "we're getting there..."

I don't know what to do. They don't listen to my father, I think because he's very softspoken they've written him off as too hard of hearing to know what's going on or not fully cognitive. Neither are true. And now they're brushing off my mother when she speaks up for him, making her doubt herself... and him.

There are good people there, the therapists and some of the aides and nurses, and my parents have made friends there. Moving him to another facility seems like it would be so traumatic for everyone, a new surrounding and starting with totally unknown people and being unknown.

Everything seems like a terrible idea right now, but I don't want to give up. So if anyone has any advice... thank you!!!

And I apparently needed to vent so thank you for reading and listening and letting me even if there's nothing to be said!!