Girls, hello??? I have such a question: what can and what cannot be on…

Girls, hello??? I have such a question: what can and what cannot be on GVB? From the first days of the baby, allergies started going, although I drank only tea with milk and bread, broth. I excluded milk as it may be lactose allergy, redness went away. Now my mother-in-law says that without tea with milk you will not have a nutritious milk, the child does not get enough to eat. I drink only black tea, the baby poops 3-4 times a day, weight seems to gain normally, not skinny. Also read that it is useful to drink burat (camel milk) Head all around, because I'm a first-time mom,