Cerelac needs to be prepared with 20 to 30 min of boiled water since its already a milk based cereal. It is better to avoid using any alternative milk till 1 year of age. If vomiting was a single one and if the infant has breastfed well after that, only observe the urine and stooling pattern of the baby.
Next Steps
Please consult a nearby paediatrician if any severe vomitings and less urine which might be due to dehydration.