A 4 months old baby should be on exclusive breastfeeding alone. Not water, not anything. If for health or any other reasons you can not breastfeed exclusively, kindly give age-appropriate milk/formula and hold till 6 months to introduce complementary feeding.

Hello ma'am, do not give anything yet. Exclusive breastfeeding means breastmilk only. Kindly wait till the baby is 6months old before starting complementary feeding. Read more on complementary feeding on the group wall and also on our website. https://babymigo.com/babymigo/learn/why-you-should-consider-exclusive-breastfeeding-for-your-baby