T.S.
My son went through periods like this as a toddler, only eating a few things for weeks on end.
My oldest daughter went through a phase where I couldn't get her to eat a SINGLE vegetable for like, two years!
None of my kids ever liked milk either. They only had it on their cereal.
They were a lot less picky once they hit elementary school.
They are now 12, 15 and 18.
Excellent health, great teeth, smart, funny kids and all are athletic.
Please don't worry about other people's children, they manage to grow and thrive, even when they are clearly not getting what they are "supposed" to be getting.