Personally I feel that the 1 years old should be eating the same type of food a 3 month old does... they are still puppies too
You can try an "all stages" food. Natural balance and Nutures variety have good one... These are the two that I have tried and love both... "Natural Balance" has less protien then "Natures Variety"... I know there are some other good ones out there but i haven't tried them yet.