Food progress

We started sam off with baby rice he wasnt keen and didnt seem to be able to work out what to do. We then tried some potato same response. We carried on and he started getting better so up to two meals tried millk desserts he eat them vegetables no fruit yes. So we kept at it then he eat cauliflower but still nothing else. Then up to 3 meals and he loves porridge and does no wnt to do with the food now and slowly taking vegetables but loving his food is this just a typical boy? But his favorites are definatley millk based meals and fruit.