I have 4 baby silkie's who are about 1 week old and are primarily going to just be pets. I want them to be friendly and social but I also don't want to stress them out as babies. When is the best time to start handling, them how long can you handle them at a time, and what is the best way to get them to be friendly and not skittish of people? I have tried feeding them by hand but they mostly keep away from me and don't want to take food from me. I try not to handle them too much so I don't stress them and make them sick.