For a 4 year old female child 12.3kg is a bit low. To understand the reason for her lower weight, a detailed history is required so as to guide you about her diet. The ideal intake for this age group should be as follows
Cereals & Millets 210 g Wheat, rice, suji, poha, ragi, bajra, multigrain roti
Pulses & Legumes 45 g Moong dal, chana dal, rajma, chana, besan, soy nuggets
Milk & Milk Products 300 ml Cow milk, curd, paneer, fortified milk
Roots & Tubers 100 g Potato, sweet potato, arbi, carrot
Green Leafy Vegetables 50 g Spinach, methi, bathua, amaranth leaves
Other Vegetables 50 g Lauki, tori, beans, pumpkin, cucumber
Fruits 100 g Banana, apple, mango, orange, papaya
Sugar & Jaggery 25 g Jaggery in ladoo, halwa; limited sugar in milk or kheer
Fats & Oils 25 g Ghee, mustard oil, groundnut oil, nuts (almond, peanut), butter
Eggs / Meat (optional) 3–4 eggs/week or 50g meat/day For non-vegetarians: adds iron,
B12, protein