How to know that breast milk is not enough. Many times mothers think that babies crying at the end of the feeding is hungry still. It may not be the cause.
When a baby passes urine 5-6 times per day know that milk is enough. Crying here is because of Wrong position of holding the baby wrong latching of the position.
Next Steps
Proper position while holding the baby for feeding should be learnt.
Health Tips
If passing less urine per day you can add formula feed mix Ina container and feed with spoon not with bottle as it causes nipple confusion.