Food for large/giant breed puppy

[animal_love]

Hi all,
I am trying to switch foods for my giant/large breed puppy.
He is an Akbash (like a great pyrenees) x Black lab, he currently weighs roughly 35 pounds at just under 12 weeks of age so I am not sure if that is considered giant or large breed.

Anyways I know that there are special food requirements when it comes to the growth of large puppy (to prevent joint problems) so I was wondering if anyone has any experience in this and can give me a few suggestions on what food to feed him?

I also heard about Now Fresh dog food does anyone know that brand and know if their large puppy food is any good?

Thanks