Although the NGV (National Gallery of Victoria) is temporarily closed there is still something for you to enjoy during the lockdown.
What about a virtual Tour: SHE-OAK AND SUNLIGHT: AUSTRALIAN IMPRESSIONISM?
It is available at:
https://www.ngv.vic.gov.au/virtual-tours/she-oak-and-sunlight-australian-impressionism/
I also found some more information and insight into the collection at: https://www.youtube.com/watch?v=xfESDvIug3w&t=4s