I had a clutch hatch recently.I left them in a moist environment for about a week while they absorbed the yolk sac.They also do not eat much at first because of getting what they need from the yolk.After a week I moved them to tanks with water just deep enough so they can lift their noses out of the water to breath.I have been feeding them worms,peeled shrimp,fish and pond pellets.They don't eat much while I am watching but when I sneak a peek they are going at the food vigorously.All are doing well.A water change is necessary after they eat the shrimp because it really fouls the water.