A four day old baby has liquid stools. The doctor onceprescribed formula milk because the mother was lackingbreastmilk, but now he has stopped it as the mother is nowgetting sufficient breastmilk. Is it normal?

Breastfed stools. Normal breastfed stools are loose yellow and seedy. If you were using formula and stopped it is normal to see a change in stool quantity and quality. Breast fed stools quality may change based on moms diet. If loose monitor for diaper rash.
Continue breast milk. Just be aware that breastfed babies usually make somewhat liquid stools. Formula supplement is not necessary.