Just let him eat what he wants to eat. If he is a grazer, just pour the RC into the bowl, and let him eat when he wants. No need at all to force feed and I would not even be concerned if he doesn't wanna eat a lot.
My 17lb dog eats 1/2 cup per day of food (1/4 cup AM, 1/4 cup PM), plus a bit of wet food mixed in, and some treats etc throughout the day.
My dads female JRT just doesn't really like to eat. She will sometimes walk away from her bowl even if there's chicken or cheese in it, she's weird. She's about 12lbs or so and literally only eats 1/4 cup per day, but she's not skinny at all, if anything she could lose a pound.
But I wouldn't force feed ever, or try to make him eat more... he's probably eating enough and knows when to stop. |