How to dress baby in 17 degrees? 62 fahrenheit

Hi all! Im stressing out about this so much. So it’s becoming really cold here in Australia at night. The midwives here are big on baby overheating so i think i always underdress my baby even though she pretty much sleeps through the night.

She wears a long sleeve singlet with a onesie on top and than a 2 tog sleeping bag. Is that enough? 🥺 I feel so sad to think maybe she is cold at night. Would she wake up if she was cold. Please help im a new mum and have never been around babies before or know anyone that has babies. Thank you ladies!!!