My 90 year old mom has been eating very little for a couple of months. It got really bad this week when she would only eat one small tub of jelly each day. After a short crying meltdown (my first but, I'm guessing, not the last), I regrouped and decided to feed her every 1-2 hours, instead of when we have our 3 meals a day. She has dementia, so has no concept of time. I just wake her several times a day.
I also bought a greater variety of small soft foods, trying to make things more interesting. Applesauce, Klondike bars, mashed potatoes with butter, etc. Added Boost with chocolate milk.
She is on hospice, but I can't just stop trying to make her a little stronger. I want her (and she wants) to see the birds and flowers again.
There is a very helpful pamphlet available from the Alzheimer Canada website, if you google the title it should come up.
Food - The four letter word in end of life care