BLUE TONGUE SKINKS

I might be a little paranoid, but I noticed that my IJ BTS hasn't been eating much of her food lately. (S)he still isn't fully grown and used to lick her bowl clean. Now she only eats some of it and then makes a mess with the rest of it. I've been feeding her Blue Buffalo grain free wet dog food with varying flavours, the only thing I've changed is that I'm feeding slightly less frequently (2-3) times a week. My Halmahera BTS still gobbles absolutely everything up and she gets the same food. Any ideas on what could be causing a slight loss in appetite? Is it something to worry about? She's still eating and seems healthy, just not eating as much lately.
Thanks!

The decreased appetite is likely due to the changing of seasons. As the ambient temps in your home drop for winter, the animal is going to pick up on that and begin to slow down. The care sheet on the main site has a detailed section on brumation, give it a read. That is very likely the issue, and if so, there's nothing to worry about at all. Very normal

Yes, mine are doing the same, it's the season. My halmaheras don't pay attention to it either. Still eat like stray dogs.