N.B.
Try letting him "play" with food for a little while, without the expectation that he'll actually eat it. Try dry Cherrios, or the Gerber "puffs". You can also try the little "feeding rings" (Munchkin Fresh Food Feeder, a small mesh bag with a plastic ring to hold on to). You can put fresh fruit or veggies in it and let him gnaw away without worrying about him choking. They're sold at Target and WalMart. My sons loved them, especially if I filled them with bananas or peaches.