Breastfeeding, allergies, reflux, poor weight gain....sigh

So V3 is 100 days old!! (That's 3.5 months old) She's still teeny tiny. Seriously...I am not just saying that, she's barely 9 pounds. She hasn't grown or gained weight in over 2 months. At first they weren't worried. Then we approached 2 months of no weight gain and everyone got really worried. When she was about a month and a half, I stopped eating dairy and she went on reflux meds because she was spitting up buckets with EVERY feeding. They sent us to the hospital for an emergency ultrasound to rule out pyloric stenosis. Thankfully it wasn't that, so no emergency surgery needed. At 3 months, I took her in for another weight check, she hadn't gained weight. She hadn't grown at all. So off to the pediatric gastroenterologist we went. We went last Thursday, she has lost 3 ounces in 2 days. So the doctor has us on a crazy regimen of pumped breast milk and formula. It's almost impossible to keep up with the pumping demands. I am also off soy too. Yep, that's dairy AND soy. Do you know how much food has those two things!? It's insane!! I feel like I am starving. V3 is still spitting up a LOT and it's worse when I use the formula. I am terrified of our appointment on Thursday. Please pray for weight gain!!!