Mommies of our age, how do your little ones eat? My baby is turning, b…

Mommies of our age, how do your little ones eat? My baby is turning, but he doesn't eat normally, and when milk starts coming in, he refuses to take it and may turn away from watching cartoons, then again grab a sippy cup. I have thoughts that he isn't getting enough to eat, capricious, with snot flowing like a river.