I have two babies that just hatched out of the egg measuring 2" not including the tail. They're one week old and already getting bigger. So... yours are probably VERY young. When you look up caresheets, try to find the information that pertains to the care of hatchlings.
Baby leos require more humidity than adults, so you should get a little plastic container with a hole cut out of the side. I use the 100 count containers that the mealworms come in. You can also use yogurt cups or small butter containers. I use damp peat moss to put on the bottom of the container and then just pat it down so it's not loose. An alternative is moist paper towels. Just put them inside the containers and then put the lid on. Then set it on the warm side, but only put about half on the heat pad and half off.
I would recommend separating yours, because of the way they're fighting over food. You can buy the large critter keeper they sell at Petco that comes with a divider. It's good that you're waiting for them to get bigger before putting them into the 20 gallon.
You probably don't want to handle them too much. My hatchlings are used to having me look at them, but they scream and panic when my hand comes in. Make sure they've got a shallow dish of water. Nothing too deep so that they might drown. My hatchlings are pretty self-sufficient, so they already know how to eat mealworms from a bowl. Count out 10 for each baby and just leave it in the bowl for them to eat from throughout the day.
Gut-load your mealworms before feeding them to your leo and dust with calcium powder that contains D3.
Wow, what an awesome gift! I wish people would give me two baby leos as a present.
Good luck!
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chickabowwow

3.2.2 leopard geckos (Rosie, Locke, Lisa, Caesar, Tommy)
and 1 more egg a' cookin' 