Picky eater

Sarah

My 7.5 month old will only eat sweet potato purée. He hates everything else and refit I eat it. Sometimes he will be banana but with literally anything else he makes faces refuses to open his mouth and sometimes spits it out. I don’t know what to do I feel like I can’t just feed him sweet potatoes. He only eats twice a day. Does anyone have any advice on what I can do?