May be your technique is wrong, just go to birth hospital of baby, they will explain position and attachment, if baby’s sucking is normal then give expressed milk
Complete areola should be in baby’s mouth, abdomen should touch your abdomen, if position os normal then attachment might be not correct technique
So once go for latching attachment
Health Tips
Might give expressed breast milk by katori spoon
Night feeding is must
Feed in semi inclined position not in lying position