Not knowing how much he weighs or what type of food your are feeding makes it hard to give a specific quantity. Here is some information that will help:
There are a few guidelines of adequate consumption that are just as important as the actual volume of food eaten. During the transition to a new home it is extremely important that your puppy eats frequently, you should offer food at least each 1-2 hours during the day and each 4 hours overnight. Allow your puppy to eat whatever it wants in about 5 minutes or so. Keep in mind your puppy's appetite will vary during the day, and day to day, just like us. Leaving dry food available as nibble food is a good idea unless you have other pets that might take advantage too often.
Once you are confident your puppy is eating regularly you can begin reduce the number of feedings. By the end of the second week shoot for about 4 feedings per day.
Your puppy's attitude will generally tell you if he is eating enough: if he eats regularly, eliminates normally, plays energetically for a while and then sleeps things can't be too bad. If you feel there are changes to this pattern let me know as it could be a signal that something is up. A decrease in consumption coupled with a decrease in activity spells trouble.