I mix seed, Zupreem fruity blend and either Roudybush crumble, Roudybush mini, or Lafeber's daily diet pellets in his seed cup. I do half seed and half pellets. I keep his seed cup available all the time. When he is out of the cage I hang it from the outside for easy access.
I give him a two inch piece of millet every couple days for a treat, and offer fresh veggies daily. He gets other occasional treats such as popcorn.
He spends most of his time outside his cage, either on top of it, or on the back of the couch. We have old bath towels all around the back of the couch, and I have a few snack stations of small piles of pellets here and there.