During neonatal resuscitation of a Spontaneously breathing preterm baby of 30 weeks, who has some amount of Laboured breathing, Oxygen delivery can be done by

T - piece can deliver PIP / PEEP - 15/5 cm H2O pressure which can be provided via CPAP. In preterm < 32 weeks self inflating bags are avoided as they provide uncontrolled tidal volume which cause Barotrauma.