@patcare I am so sorry to hear you are dealing with this issue. Sad to say, it is not uncommon in our older relatives, with or without MAC. Taste buds change, appetite shrivels with less physical activity. Your Mom's situation is made worse by the fatigue the infection brings, and the need for more calories to fight it.

Before I was diagnosed with MAC, and over the 18 months of treatment, I lost about 25% of my body weight for the same reasons your Mom gives. If anyone put a cup of liquid, a bowl of soup, or a snack-sized plate of food in front of me, it was overwhelming and I didn't touch it.

What finally made it work for me was, literally, one ounce of food or 3 ounces of liquid at a time. Every hour, I would force myself to eat - one small piece of cheese, 1/2 a hard boiled egg, 3 ounces of a fruit & vegetable smoothie enriched with protein powder, 4-5 cashews, one square of graham cracker with a dab of peanut butter, a few teaspoons of ice cream... To this day, over 3 years later, I still eat small portions of food most of the time.

With my grands, we call these little bites "nibbles" - have you offered your Mom tiny portions?
Sue