A father of four and his eight-month-old son remain in a critical condition after a horror crash in regional Victoria over the weekend.
Paul Kilmister, 44, is in a critical condition in Melbourne's Alfred Hospital after the crash that killed his wife Amanda and their 12-year-old son Harrison.
A hospital spokeswoman said on Tuesday doctors were able to stabilise him overnight.
He remains in a coma, unaware of the deaths of his wife and son.
The couple's two-year-old son Morgan has been discharged from the Royal Children's Hospital, where his eight-month-old brother remains in a critical condition.
Doctors on Monday said they hope to withdraw baby Austin's sedation over the coming days.
He has a back fracture, but it is unknown whether he has any spinal cord injuries.
Victoria Police said a truck travelling on the wrong side of the road crashed into the Kilmister's car on Friday night on the Valley Highway in Brimin.
The 31-year-old truck driver from Mooroopna was interviewed and released pending further inquiries.
Ms Kilmister's brother Daniel Gwynne said the extended family was now banding together to rally behind Paul and the boys.
"We've been totally devastated by the events of the past few days," he told reporters on Monday.
The family are bracing themselves to break the news to Paul when he wakes.
A GoFundMe page to support the family has raised more than $3000 since it was set up on Monday.
Australian Associated Press