Most babies will hiccup from time to time. Parents may be nervous and worry about whether the baby will get sick. Most of them are normal during feeding. Parents need not worry too much about this.
Possible reasons: First, the neonatal nervous system is not well developed and cannot coordinate the movement of the diaphragm well, so it will hiccup if it is mildly stimulated; the second is due to poor care of the new mother, such as eating too quickly, too much Swallowing too much air and crying when you are full or breastfeeding can induce paroxysmal and spastic contraction of the diaphragm and cause hiccups in newborns.https://www.babedear.com