Please do not feed ANY puppy food other than Eagle Giant Breed Puppy. Try to stick around 21-23% protein with a GOOD adult kibble - Natural Balance, Innova, CA Naturals, Wysong, Diamond, Wellness, etc.
The pain and potentially crippling, even fatal (many are PTS for pain) effects of overfeeding a pup can happen so fast and be such a heartbreaking experience for all involved and can hurt your puppy permanently.
Just follow the guidelines on the bag, feeding 3 times a day until he is a bit older, with a raised feeder. Keep him nice and lean, it is better for his bones and heart. If he finishes each meal and still seems hungry, add a little more at the next meal, so long as he isn't getting too big. If he doesn't finish at a meal, then decrease the next meal.
And please do not free feed! It's important to know how much they are eating, as well as watch for signs of bloat. It is also helpful if you ever need to limit their food.
Congrats on your new baby! How old is he? Name? I'd love to see pics!
Ali