He actually looks really good to me. Our Hannah is a good eater. We do give her a teaspoon of grated cheese, canned tuna, or grilled chicken with most of her meals, just as an appetizer. She is 9 years old in a couple more days. We helped our daughter get a V and few months back, and she will be 6 months old next week. She has been more picky and the kids can’t afford a topper for every meal, but she has recently been doing quite well without the add-ons. She looks pretty similar in build to your boy. I wouldn’t worry too much. He won’t starve himself to death.