Girls, for those whose kids have allergies to cow's milk protein and w…

Girls, for those whose kids have allergies to cow's milk protein and who are breastfeeding, how do you eat? I was given such a diet here... You can only eat green vegetables, macaroni, which does not contain eggs, lean pork, chicken fillet and rabbit only in stewed or boiled form and cereals... and this until weaning. And then I will have to pump myself with such food...