The 51-year-old singer-and-actress worries whether her busy schedule fits with raising Max, whom she welcomed in 2019 using in vitro fertilisation (IVF) treatment and sperm from an unnamed donor.
Imbruglia told the Saturday Guardian: "I worry a lot about how to juggle being a single parent and working - scheduling keeps me up at night!"
The Torn hitmaker wished she could "clone myself so I could work and be with my son at the same time".
The Johnny English star had Max while she was single, insisting she did not choose the process "over being with a man" and was just battling her "biological clock".
Imbruglia underwent several rounds of IVF to have her son, whom she keeps out of the spotlight because, as she recently told The Sunday Times newspaper's Style magazine, he is "a very private person".
The "pretty brutal" experience with IVF has made the Shiver artist urge other women to do their research before having the fertility treatment, where eggs are fertilised with sperm in a laboratory, and an embryo is placed into the womb.
Appearing on a June episode of the How To Fail With Elizabeth Day podcast, she said: "It's pretty brutal. What I will say is that it's really important to educate yourself and to ask a lot of questions and for women to share.
"There's a lot that I didn't know or understand about that process, and there's a lot of trauma involved along the process of learning things that someone could have told me."
Imbruglia insisted the hormones taken during the process can make life difficult, saying: "It's also the in between is the hard bit.
"It's the freefall that they don't prepare you for. They don't kind of wean you off of it. It's just like, sorry, it didn't work, and then stop.
"And you've got this whole period of time that you have to pull yourself together. And they don't really speak about that. I don't think you're mentally prepared for that."
Imbruglia added: "I think I would just say make sure you are really well informed and that you talk to women who've been through it because there is a lot that the doctors won't tell you, and don't go through it on your own.
"Have some really good friends that you can call and who can help you through it because it can be quite lonely, can't it?"
7°C