Home cooked food is the best option, but the dog is a member of canine family, so, meat is essential for proper physical and mental gowth of a dog. Meat should be mixed with carbohydrates(rice is the best in the weaning stage later, chapati can also be tried) along with a little vegetables. Avoid using large amount of vegetables because the short structure of dogs digestive system makes it difficult to digest and bloating or other problems may occour. Milk is not a suitable option for a dog, but yoghurt or home made Dahi is good for his digestive system.
Sloppy mixture should be avoided for proper digestion. And a bowl of fresh water is needed for his disposal round the clock.
Another point, please ensure that your dogie is properly vaccinated especially distemper, parvo and Rabies, until then dont let them get mixed with other unprotected puppy or adult dogs. To know more about rabies related issues you can visit http://rabies.org.in/