That’s what I could think of at the moment for an answer and temporary action- but of course, hypothetically if I know the person I’d like to discuss about the said person with Chopper before taking actions and adjust the ration and the needed supply for them. (in example: if the person is lacking in iron, that means the said ingredient have to be focused in it and turned into easy-to-eat form, but of course every nutrient the body need is important, so the said ingredient will be mixed with other or only be majority of some meals- but not all of it. This was only an example. This is why consulting into someone professional in the field first might be important.)
After a bit of forming the habit of the scheduled food and the person able to take more food, then I can slowly change the portion into the normal one- not by immediate, made it slow so the body can get used to it before getting into a full course.
But once again I’d be asking Chopper for more consultation before taking action. It works for every condition and/or illness, because each person can varies.
It’s also important to be taking notes of what caused nausea/pain/any other complications and avoid the said ingredient and replace it with something with same nutrition.
Strawhat's Cook 