If a formula is used, the manufacturer's directions must be followed carefully in its preparation. Diluting a formula too much or too little can both cause very serious consequences. Care must be taken to be sure the water used is pure and the utensils are clean. Whole cow's milk may be introduced after the first birthday. It is inappropriate prior to that time.
Little children have relatively high energy needs but small stomachs.
Failure to grow has been documented in children fed diets low in fat. We need to remember that the nutrient and energy needs of little ones are different from adults and recommendations for adults are not appropriate for young children. By four to six months of age babies can hold their heads up when sitting and turn away if they do not want more food. They are interested when others are eating and open their mouths when food is presented to them. By this time the baby's digestive processes are ready to assimilate food other than milk.