Is it recommended to keep the baby on a formula for longer and delay introduction of cow's milk if there is known history of lactose intolerance in the family?

Lactose intolerance is very rare in newborns and usually develops only in teen years. Formulas also contain lactose as they are usually made of cows milk so keeping a child on formula vs whole cows milk will not help with lactose intolerance if your kid has it. I'd first try regular cows milk and observe symptoms - diahorrea or constipation, throwing up, gassiness or fussiness. If your child does demonstrate these, try lactose free formula or soy milk.