Your baby will go through many ages and stages, of course. A vegan lifestyle can meet all his nutritional needs along the way, but be especially watchful on how your baby responds to new foods, supplements and beverages. According to VegFamily, your baby will be born with almost no Vitamin B12, but he will get plenty through your breastmilk if you are consuming plenty of it yourself.
Around twelve months, the baby will start to transition from breastmilk or formula. However, if mututally agreeable, it can be done up to age 2 for your baby. Introduce whole grains and protein-rich foods like tofu at first. A supplement that's hidden in food is great for this stage.
Dr. Neal Bernard, the president of the Physicians Committee for Responsible Medicine, stated in a quote cited by the New York Times, "It is not difficult at all to get complete nutrition on a vegan diet if it is supplemented with Vitamin D and B-12." Since this is especially true for your growing baby, address these specific supplement concerns with any health care provider, nutritionist or doctor that assists you in planning your baby's diet.