All those package recommendations are guidelines only, not holy writ. They are OK to start off with but you are expected to adjust the amounts for your puppy.
Most of the time, the recommended amounts err on the side of overfeeding. It assumes that if your puppy doesn't need that much food, you - the owner - will know enough to cut back. Either because - as in your case - your puppy won't eat it all or because your puppy will eat it all but is getting too fat.
Most of the time, the recommended amounts err on the side of overfeeding. It assumes that if your puppy doesn't need that much food, you - the owner - will know enough to cut back. Either because - as in your case - your puppy won't eat it all or because your puppy will eat it all but is getting too fat.