My husband just finished five weeks of treatments (chemo/ radiation) hoping that all will be well for surgery next month. Even before this regiment, he had a hard time swallowing food, especially bread and meats.
Surprisingly, he can eat nuts, peanuts, pistachios, cashews. In the morning, I fix him 2 poached eggs, he will add a dish of ice cream with cheerios.
During the day, he eats nuts, ice cream, Ensure, etc. For dinner, I cook regular food (sweet potatoes, potatoes, carrots, chicken, etc, no acid food or spices) which I transform into a puree with an immersion blender, everything turns into a cream soup. To this, I add some heavy cream (not too much, it can cause heart burn) milk and cottage cheese. He has lost some weigh, 20 lbs, but seems to maintain it now, so far.