When your baby reaches 2 years, then it can be told that your child has achieved another milestone. With the fully grown teething your child has a transition from its liquid/semi solid food to solid food. Also children at this age are hyper active and fun making with the complete exhaustion of energy.
Till now milk and any baby porridges was a wonderful food supply which managed all the nutrients for your child. But 2 years is a age where milk alone cannot feed all the nutrients, many other forms of minerals, vitamins, proteins are necessary for the healthy growth.