They can refer to good books on diet planning for this purpose.

They can refer to good books on diet planning for this purpose. One such books observes: Expert dieticians advise that lactating mothers should consume a combination of food products available to them. In particular they should include beans, grams, milk, fresh butter, coconut, olives, walnuts, almonds, sweet and succulent fruits like water melon, gurma or musk melon, and pears etc.

[1] Imam Sadiq says: If you have engaged a Jewish or Christian woman to foster feed your child then ask her to abstain from consuming pork and alcoholic beverages. [2] If the feeding mother falls ill and has to take medication, she must keep the matter in mind that her own milk might get the effect of the medicines and harm the child who feeds on it. The mother should not indulge in using medicines without consulting a competent medical doctor. [1] Aijaz Khurakia, Page 251 to 256.