My son, who is 19, has both Delta ^F508 and E60X.
Most of his problems growing up were nasal polyps and bowel obstructions, which led to a diagnosis of DIOS (Distal Intestinal Obstruction Syndrome).
The (undetected) bowel obstructions led to poor or no weight gain. When he was 12, he had a g-tube, which he kept for six years. It was the best thing we could have done for him. His weight doubled in six months. At 17, he insisted in having it removed. He has not gained any weight since removal of the g-tube.
His lung function was excellent until the age of 16 (pneumonia, colonized pseudomonas, and I believe poor compliance in doing his required daily treatments). His lung function is now at about 79%.
The info that I have found regarding the E60X mutation is that it frequently is associated with stomach and bowel issues.
I wish the best for you and your baby daughter.