Vektek you rubbed off on them by showing what was good and not good. You're an example ...they are watching more than you realize.
Eventually the family will do a better job of what to eat.
A neighbor here never bought veggies for family to eat. I was always seeing meat sandwich or noodles and cheese.
They see what we were eating and comment about seeing onions in the meal and lots of green stuff.
I see veggies on the dinner plate now.