@hendric They don't seem to be the same skink but the photos I've got just aren't clear enough to be sure.
These skinks are really very small, and I've been snapping them with my phone, in poor lighting, while trying not to keep them captive longer than necessary. To be confident in my ability to identify individuals I'd probably have to use my Proper Camera, a macro lens, and a really bright light, and I'd be reluctant to submit them to the stress of that even if I do get another opportunity.
I reckon I'd have much better luck getting to know the water skinks in my yard instead. They're much bigger, are active during the day, have more prominent patterns, are seen far more frequently, are quite bold around humans, regularly frequent the same spots, and often have distinguishing features such as regrown tails and, in at least one case, a missing leg: https://aus.social/@spacelizard/114204745560236505