The UK Department of Health and Food Standards Agency recommend mums to try to exclusively breastfeed for up to 6 months. Exclusive breastfeeding means the baby has no additional fluids including water and no additional solid food.
What to Eat and Drink Whilst Breastfeeding
Soya-based infant formulas should only be used following medical advice. They are sometimes used for babies who are unable to tolerate cow's milk, although such babies may need special 'hypoallergenic' milks as soya can also trigger an allergic reaction.
Cow's milk is not suitable for babies as a main drink until they are one year as it does not provide sufficient iron. Goat or sheep's milk is also not advised as these do not provide sufficient iron and other nutrients. Once your baby is one year they can be used if they are pasteurised.