Your puppy might not look like a puppy anymore. And with all the work you've done, he might not act like one, either.
But until maturity is reached, you've still got a puppy on your hands. So keep the Purina® Puppy Chow® coming until then. (For bigger breeds, you should continue to serve Puppy Chow® for as long as two years.)
There are a lot of other things to consider as your incredible puppy matures. Spaying or neutering is one. Allergy treatment is another.
And once that rapidly growing body reaches its full potential, you'll want to continue supporting your pet with a high-quality adult food like Purina® Dog Chow®. Your adult dog will have different needs than a puppy, but the care, the training and the interaction you provide will continue for life. And with proper attention by you, it can be a long, healthy, happy life.