Hello, Danielduckwolf, I have raised ducklings inside for several years. I usually collect the ducklings that get left behind when "Mama" heads for the lake, or I may
steal" some if there are more than 10 ducklings. You can use newpaper to line their cage or I use puppy pee pads for mine. If they are newborn ducklings you may need a heat light for the first week. I feed my babies chick starter feed, unmedicated, for the first few weeks. You can buy it in 1 lb paper bags at any feed store. After the first 3-4 weeks, I begin to add scratch feed, which is cracked corn, As the ducklings continue to grow, I move them to a wire dog cage once they become large enough to not escape through the bars. Keep shallow dishes of fresh water in the cage. As they continue to grow, their bills enlarge. Their first feathers appear on the edges of the wings and their tails. By the time they are 6-8 weeks old you can usually distinguish the males from the females. The males will have larger bills and feet and appear larger than the females., As they grow, you can add freshly diced tomatoes, cucumbers, chopped kale, dried mealworms, etc. to their diets. My grown ducks love their "duck salad" and they especially love dried cat food and frozen green peas.
You can enjoy watching them swim in about 3-4 inches of water in a bath tub or sink from the time they are a few days old. They love the water and dive and swim with ease. Just be careful while they are covered with fuzz as the fuzz is not waterproof and you need to dry them with a towel before putting them back in their cages. Once they get feathers, they will become waterproof. You can keep them in a fenced yard with a child's plastic swimming pool with 4-5 inches of water. Make sure they have a few shallow water dishes and make sure they get fresh water and feed daily. I feed my grown ducks on a cookie sheet.
You should have no problems keeping your ducklings alive if they are warm, have food and water and lots of cuddles. Ducklings don't seem to mind being handled and will cuddle with you. Perhaps this new interest will help lift your depression and you will see worrying about them will replace worrying about yourself. I will also pray for God to comfort and strengthen you as you grow stronger. Sincerely, Muscovy-gal