Feeding Issues Once Again

Sighhhhh I thought I completely transitioning Gerald to a day feeding, but I guess not! He did really well for almost three weeks without puking at all. I was really proud of him and bragging about it with his GI doctor that he was doing real well and no more puking. The doctor went up one knotch of his calorie intake from 1100 kcal/day to 1400/kcal/day which gives us upto six bottles of pediasure. He did well for one day of no puking and for the rest of the week and until now he puke and puke and puke every time I gave him his feeds. My husband and I were talking about blended food, but I said that it is not appropriate for us because I couldn't keep up my kitchen regularly. Once I get done everything I need for school and be focus on hose cleaning and other stuff I might considered the blended food. Plus, he has diarrhea everyday. For  more than 2 years he had the constipation, now he have diarrhea. Is anyone know how to treat diahhea naturally? I gave him pedialyte just to balance his electrolytes since he is puking and diarrhea at the same time. Poor GJ :(