How small are they? Dwarf species spiderlings are tiny and there is no way that you will be able to tell if they've eaten. The only real way to tell is that their abdomen will be getting larger. You will likely not be able to judge by how much of the prey item is gone. They are going to eat so little of it.
Wise thing to do.Slings that small I keep in 1oz sauce tub with a tyni piece of spaghnum moss for cover and is so much easier to keep an eye on them.Also I always feed them pre killed as they can moult at any time even the day after they had eaten.
I feel like I write this 10 times a week.....Fat ts, even slings, don't require food, they just require patience. Your little t is EXTREMELY fat...food should be your last worry.....literally do nothing and wait for a molt....it shouldn't be too long as your t is heavy pre molt.
My Males matured at about the size of a quarter, maybe a little bit bigger than a quarter but not much.
You're correct. Since this is one of the smaller species in the genus, with adult females topping out at only about 2", this spider is a juvenile at this point and started life off at half their current size.
Woo!!! Gorgeous tarantula
Your little c elegans does look like it's in pre molt they do loose the heart shape when they are going through this stage.