My wife is going through the same thing. What I been doing with the bathroom is I slip my left arm under her left and hold her right wrist which frees up my right hand to pull her pants down and sit her down.
My wife’s mother and my father went through memory loss both put into a home, when my wife’s memory started failing she told me then she didn’t want to be put in a home she wanted to stay with me and I like being with her still with all the problems, so as long as I can physically take care of her I will