[PEDS] Apnea of Prematurity | Respiratory Distress Syndrome | Bronchopulmonary Dysplasia (BPD)

Any idea how to keep these three diseases (AoP, RDS, BPD) straight? On UWorld I swear every time there is a "2-day-old patient evaluated for RDS" it turns out they have apnea of prematurity... (and of course the management for all three are completely different). Any tips?