It is awful. I have been my mother's healthcare proxy for 5 years, 11 months - during that period she has spent 60-75% of her time in hospitals and LTACs, so it's often daily calls, sometimes more than that. My sister has arranged for her homecare providers when she's been home.
Both of us have been profoundly damaged by this. It is a very tough conversation, but please reflect on that. If there is one thing that the last 6 years have taught me that I would wish to pass on to others it's this: don't be a caretaker, unless you can do it without detriment to yourself.
It's a weird kind of co-dependence, made much worse by all of the good feelings involved. In short, people who are caretakers have a skill set that includes being able to do that as a job as well as take care of themselves. It never works that way for family members, because it's not a job. The other part is that you can never really predict what will happen. My mom should never have lived this long - and aside from the gladness I've felt for being able to continue to have her in my life, we also had our careful plans (oh, how funny that phrase seems in hindsight) absolutely splintered.
I'm venting and apologize for being self-centered, but the point is: it's a slow torture that none to few survive. As each of us need to care for ourselves first and foremost, there is agony in choosing to do that over caretaking, but remember: as you decline, so too will all else.
I'm terribly sorry for the pain and frustration you are experiencing.