Inclusion Criteria:  The mother's milk Preterm babies with a gestational age of 30-33 weeks No facial deformity, No respiratory, cardiovascular, gastrointestinal and neurological disorders or syndromes that would prevent or complicate oral feeding, No need for oxygen support, There will be preterm infants who are not fed orally, but who are started with tube (Orogastric) feeding.  Exclusion Criteria:  Transferred to another center during the research, Unexpected complication development during the research, Occurrence of a pathology that will prevent or complicate oral feeding, In cases where there is no voluntary consent of the parent The mother is Covid positive