Safeguarding officials carried out a review into the care of 18-day-old Hunter White.
A jury at Nottingham Crown Court was told how the tragic 18-day-old tot passed away as a result of what is called "positional asphyxia" when he was in the care of his father, Adam White, 45, of Foxhill Road East, Carlton.
White "fell asleep under the influence of something" and Hunter, facedown, died.