2mo old doesn't eat good or much food why? 2oz if that at each feeding

Poor eater: That's not enough nutrition for a 2 mo baby. Babies continue to gain weight despite having acid reflux. Is your baby vomiting also? Perhaps he may have pyloric stenosis. If a girl, poor feeding is one of the signs of a UTI (urinary tract infection) and one of the metabolic diseases. It looks like your baby needs more detailed evaluation. Get a second opinion.