Hi @cka44 and welcome to the Bunnings Workshop community. We're really pleased to have you join in the discussion and trust that you'll get loads of helpful information, advice and inspiration for all your projects around the house and garden from our wonderful members.
Thanks for the photos you have shared. Let me tag the amazing @Noelle to see if she might like to kick off this discussion for you.
Please let me know if you ever need a hand getting the most from the Workshop site.
It certainly looks like a mite infestation. Try gently wiping the undersides of the leaves with a soft cloth dipped into a solution of ecoOil or White Oil, diluted with water as per the label instructions.
Or if you prefer and have a sheltered spot to do it, take the plant outside and spray the undersides of the leaves with the same solution., Leave the plant outside until the leaves have dried off - you don't want runoff dripping on to carpet or your floor!
While you're at it, gently wipe the topsides of the leaves too - it will remove any dust and leave them shiny and clean!
If this indoor plant has insect pests on it, check other indoor plants as well and treat them too if required.