She uses a walker and is totally incontinent. I shower her, cook, clean and manage her affairs for her. Unless I am with her (and sometimes that does not even matter) or she is eating; she is sleeping. I work from my home also and cannot be in the same room with her all the time but I am in the house with her day and night.
She wants to watch TV all day and most of the night, but she is asleep in front of it most of the time. She will not get up and move around either. Is this normal for a 90 yr. old?
But to answer your question, "Is this normal for a 90 year old?" I'd have to say it may be normal for her.
How long has she been living with you? Has the amount of time she sleeps been increasing? You are working and obviously can't be with her every moment. Might she like a companion to visit it her a few hours a day, to play cards or look at photo albums, or push her around the neighborhood in a wheelchair? Have you tried anything like that?
I am sorry for so many questions, but the more we understand the situation the better able we are to compare it to our own experiences and determine if we have something to share with you that might help.
It would be good, too, if you would fill out your profile a little, for the same reason.
God bless you both.