Hunter White was pronounced dead by paramedics at Kingsway Gardens on July 10, 2020, and his parents admitted cruelty to a person under the age of 16.
His dad, Adam White, 45, of Foxhill Road East, Carlton, pleaded guilty last September.
Hunter’s mum, Terri Walters, 32, of Kingsway Gardens, changed her plea to guilty in March.
Both parents, who have longstanding drug problems, were initially due to be sentenced on April 22 but the hearing was put back to May 6 and again adjourned.
Sentencing was listed at Nottingham Crown Court for today, May 20, but has again been put back until next Monday afternoon.
Nottingham Crown Court had previously heard that Hunter died due to a lack of oxygen and blood flow to the brain because he could not breathe or move, which is known as ‘positional asphyxia’.
Judge Gregory Dickinson QC, the Recorder of Nottingham, said that Adam White ‘fell asleep under the influence of something’ and left Hunter facedown.
He continued: "The mother was in the house, also taking drugs, and went to bed, leaving the baby with the father when not safe to do."
Adjourning sentencing again, Judge Dickinson said: "This is a serious case and all of us, from different perspectives, want to bring it to a conclusion."