 [ Symptoms ] 3 week old vomiting from mouth and nose but scan does not show piloric stenosis [ Disease ] it could be a baby gerd more frequent burping whether you bottle feed or breastfeed avoid feeding your infant two hours before bedtime burping your infant every one to two hours after feeding helps relieve gastric pressure and may help prevent acid reflux burp bottle fed infant often during feedings about every one to two ounces