When adding supplements to a dog’s diet they shouldn’t make up more then 10% of the caloric intake. I use fresh foods whole foods as supplements: veggies, fruits ( no grapes raisins, currents, onions, garlic ) DHA,EPA ( fish oils).
I’m not sure what you mean by rotating boiled chicken and rice with Fromm. Boiled chicken and rice is missing many nutrients and as such is not a suitable to use as a meal on an ongoing basis. If using boiled chicken and rice it should not make up more than 10% of the calories fed that day unless you are balancing your homemade food.
