My mother will no longer eat most meats, veggies, pastas, hot foods, red sauce, rice, you name it. She is an insulin dependent, 5 shot a day diabetic, very difficult to get protein in. She dies drink protein drinks but not enough. To complicate things she had 2/3 of stomach removed but is doing well there. All she wants is sweets, a non, can have very small amounts. When we eat out we have to find restaurants that sell cereal. I'm about at the end of my rope.
I would try Greek yogurt with added nuts and fruit.
Peanut butter with sugar free jam or whole fruit spreads
Scrambled eggs with tomatoes
What a out adding nuts to the cereal she will eat
Protein bars are really good for lots of protein in a small bar
None sweet ideas
Rrefried beans with lots of allowed cheese.
Meat highly seasoned and cut into strips for finger food.