Fruit first

Okay. I don't know if this is my fault because I introduced Ryden to fruit first at around 4 months, but I can't get him to eat anything else, except maybe sweet potatoes. I have tried peas, lentils, chicken, beef, butternut squash, carrots (all mushed, blended or as baby food). He prefers pears, plums, bananas, apples. He really has a fit like I'm torturing him if I feed him non-fruit.