How to get protein in small portions comes down to a concept nutritionists call protein density — grams of protein per bite, not per plate. When someone can only manage a few bites at a meal, every one of those bites needs to work harder than it used to.
Not all foods carry the same density. Plain pasta, bread, or rice on their own are relatively low — filling in volume, light on protein per bite. Eggs, Greek yogurt, cottage cheese, lean meat, fish, and protein-fortified staples sit at the other end, delivering far more protein per forkful. The practical shift is to lead a small plate with the densest option available rather than the most familiar one, and to treat starches as a side note rather than the base of the meal, even if that reverses old habits.
Fortifying a food that's already familiar is often easier to get down than trying to eat a whole separate protein source when appetite is limited — a small portion of pasta carrying a protein-dense sauce can do more nutritional work than the same size portion of plain pasta with a plain protein on the side, simply because there's less to chew through and less volume required to hit a meaningful gram count. The numbers make the density gap concrete: three ounces of chicken or fish carries roughly 20 to 25 grams of protein, while three ounces of bread or plain pasta carries closer to 3 to 5 grams for the same volume. When only a few ounces of food fit at a sitting, which few ounces they are makes an enormous difference to the day's total.
When the goal is protein per bite rather than protein per plate, small portions stop being the obstacle they seem like at first.