DS Has been eating puree food that I make myself. I haven't changed how I am making the food, still boil and make a smooth purée in blender. All of the sudden any solids he gets he's gagging. We have been doing solids since 4 months old and I've never had a problem. He will now only have his bottle. This is occurring with stuff he's been having for months as well as new thing foods. I'm only doing fruits and vegetables, nothing else