Limit excitement and handling as much as possible. Puppies require about 16 hours of sleep a day. They will sleep about 3 hours and then play for about an hour. They will get sick if they don't get their sleep.
Toy breed puppies do not eat much at a time so they must have a good quality dry puppy food available at all times. It should have beef or chicken as the first ingredient, not corn.
You can entice your puppy with turkey, chicken or beef baby food. You can mix it with ricebaby cereal or feed it alone. Dry food is much better for the teeth so limit this practice to periods of appetite loss.
Do not give your new puppy milk!
Provide lots of chew toys and stuffed animals to play with.
Your puppy might get a little 'homesick' for the first few days. He just left the only family he has known. Familiar sights and sounds are replaced with new ones. The pup may be very quiet the first few days or may appear nervous. He will adjust and show you his personality in a few days. You need to see a veternarian if you see any signs of diarrhea. Diarrhea is a common symtom of stress in puppies and they can become dehydrated very easily.
Hypoglycemia occurs in small breeds. This is the medical name for low blood sugar. This can be fatal in small puppies! Symtoms will include listlessness, inability to stand up, or seizures. If this happens, give the puppy some honey, syrup or Nutri-cal (you can get this at most pet stores), wrap the pup in a warm towel and he should perk up rapidly. As soon as he is able, offer him some food. Make sure to feed your puppy right before placing him in a crate at night. Do not leave a tiny puppy in the crate for more than 6 hours at a time initially without food.
Don't allow your puppy contact with other dogs until vaccines are complete. Even if another dog has had vaccines he can be a carrier and give your puppy a fatal illness.