The goal of this therapeutical intervention trial is to investigate whether tactile-kinesthaetic and oral sensorimotor stimulation can improve gastrointestional function in preterm infants born before gestational age of 30 weeks and newborns with congenital diaphragmatic hernia. The main question it aims to answer is: • To determine whether HAPTOS- intervention (Handling Adapted to Postnatal age with Tactile-kinaesthetic and Oral sensorimotor Stimulation) in the particpants results in earlier attainment (postnatal days) of full enteral feeding and/or full oral feeding (post menstrual age) compared to standard care. Researchers will compare an intervention group receiving standard of care plus HAPTOS intervention to a group of patients receiving only current standard of care.