Hi there! Alexis gave you some terrific advice and reassurance. Here a couple of things I've done to encourage my girls to eat whatever seemed to be low on their priority list at the time:
-vary the bowl or plate you use. Try a cafeteria style tray (they have them at Target and Fred Meyer), using several little tiny serving bowls, a platter, ect.
-when/if you're comfortable trying, poke everything with a toothpick (I took this advice reluctantly from another mom- didn't sound safe- but my girls have never hurt themselves)
-offer food just prior to "meal time" in a novel location: the counter, the coffee table, use a chair as a table, etc. Consider it an appetizer- but maybe he'll eat his whole meal that way. Downside is he may become resistant to sitting at the table (that happened with one of my girls).
-This worked REALLY well: focus on one food group per meal/snack. I would serve only a variety of veggies at one meal, just dairy at another, etc. This worked so incredibly well, I don't know why. Plus, I would serve whatever my child seemed to be least interested in at the meal I could always count on her eating well (usually breakfast or afternoon snack).
-Get a friend to serve up those veggies at their house to get them hooked. New surrounding, new food, equal new interest (maybe!).
The key to all of these things is novelty. Good luck to you, and whatever you do, don't get stressed out!
J.