My son is gluten/dairy/corn/soy free. He's always enjoyed silver dollar pancakes made with GF mixes (Namaste, Pamelas, etc.). I'd cook up a huge batch mixed with pureed veggies then freeze them. They're awesome! I also make mini biscuits with pureed veggies in them which also freeze well. Any corn and/or rice cereal is good (just be sure they don't contain sneaky barley flour). We do lots of smoothies as well - another place to hide healthy stuff :) Envirokidz makes rice crispy bars that are a healthier GF option (no corn syrup). Rice noodles are fantastic and cook quick - spaghetti, lasagna, etc. There's some mac-n-cheese (or no cheese if you're avoiding dairy) made from rice noodles these days too that are great (Annies or Road's End mac-n-chreeze). Glad to hear you have a smart doctor, most don't think of nutrition recommendations, your kiddo is off to a great start!