Is my Shih Tzu fed up with his dog food?

by Angel Fernando
(Philippines)

He has been eating the same dog food for about 4 months now. But these days, he doesn't seem to touch his food. I tried to feed him home cooked meals and i think he likes it.

I'm a bit worried that he might appreciate human food more than his own food. How could I make him eat his own food again? I don't want to use any kind of spray or food enhancement.

Suggestions?