Newton John’s daughter Chloe Lattanzi also revealed that she and her mother don’t talk about cancer often.
“We don’t know, we don’t need to talk about it. If she’s having a day where she needs to talk about it, I’m there to listen and to always reassure. I’ll never bring it up unless she wants to, do you know what I mean?”
In January, a report surfaced that Olivia 'has weeks to live' as she struggled against her third bout of cancer.
RadarOnline said that the Grease star is hoping she can last to see her daughter marry long-time partner James Driskill.
"Olivia's bodily functions appear to be shutting down, but she refuses to let go until she makes it through Chloe's wedding day!" a source told RadarOnline.com.
WATCH: Chloe Lattanzi shares video having fun with mum Olivia Newton-John