Caring for kittens is usually a phase that is more difficult than caring for cats that were older. At the age of kittens, nursing is the most important thing. Usually kitten suckling on its mother for 10-15 minutes. Therefore, the mother cat should be given food and drink during breastfeeding.
Kittens usually eat solid foods when they are three weeks old. We recommend you not to give them a cow or goat milk; because it contains lactose which is incompatible with their weak digestion.
To familiarize them defecate, prepare a place which contains stones (use zeolites which absorbs odors) that they used to defecate there. Do not forget to clean it regularly during the day. They will get used to defecate in place that you have provided. Caring for kittens carefully is a very necessary thing early on, because they will be familiar with the rules that you pass off to them since childhood.