Managing protein and calcium requirements on a dairy-free vegetarian diet can be challenging but is entirely possible. Incorporate plant-based proteins like moong dal, lentils, chickpeas, and tofu into your child's meals. Ragi is an excellent, calcium-rich grain suitable for infants. If your child is older and not taking a milk substitute, consult your pediatrician about appropriate calcium and Vitamin D supplements to bridge any nutritional gaps. Always focus on a variety of whole foods to ensure a balanced intake.