My sons eating habbits.

All my 4 year old wants to eat is junk food.... He will eat nothing but pb&j sometimes he'll eat a hot dog... forget about fruits and veggies. I have tried getting this kid to eat and all he does with waste food. I might as well flush my money down the toilet this kid waste $100s each month in just food alone.... and all he will drink is juice he won't even touch water... now I have not given this kid a choice and made him eat food he tried wasting and with no prevail he still acts this way... people in my family tell me all the time is a phase it will pass....

That's not what I'm concerned with it's the fact that he has such bad eating habits. He will dehydrate and starve himself if all I give him is stuff I want him to eat.....