My daughter was 18 months old when her CF doctor suggested a feeding tube. I was reluctant at first, and cried a lot about it to be honest. Eventually he talked me into it. She was tiny...he said she would not even come close to her potential adult size if we kept going the way we were. She also had HORRID pains/gas/malabsorption and was put into the hospital for an obstruction. She cried a lot, and it was an awful time. At about 21 months of age we went ahead and did the G-tube surgery along with the Nissen Fundoplication. It was hard at first adjusting to the gtube--but it was definitely 100% without a doubt the correct decision. For the first time in her life I could put her down to play! She was so much happier after her recovery. My daughter is sixteen now (yikes!) and her gtube is still her best friend. Everyone has a different experience, but for us it was a Godsend. Let me know if you have any specific questions. She is about 124 pounds and 5'2". Her BMI is perfect, and I'm glad we didn't wait any longer to do the procedure.
Mommy hugs !