Where do we go from here? 19 mo w/ reflux

The board here was so helpful in the earlier days of reflux, especially w/ regard to reflux medicines and dosages. The Marci kids site, that I learned about here, was also so helpful. For many months now, we have been treating with Zegerid with no end in site. Our biggest challenges include the following:

• DD2 is still gulping frequently and choking on what appears to be reflux (she has been a silent refluxer from the get go). She also seems to choke more often than normal while simply drinking.
• Her 2 stomach bugs took a full month each to resolve (older kids turned around within a day). There appears to be a lactose sensitivity following any stomach illness. Even with eliminating dairy, she still takes WAY too long to fight a stomach illness. I am afraid to take her to any sort of group child care (church, gym) because I am afraid of a prolonged illness.
• We have had issues with yeast since essentially birth (thrush for me, yeast diaper rashes for DD2; most recent yeast diaper rash was last week so it is an ongoing problem). She gets daily probiotics.
• She often goes on eating “strikes” where she refuses solids. I am not sure if it is related to reflux or when she is backed up (constipated) or both. She definitely prefers drinking to eating.
• We have not yet introduced straight cow’s milk.
• Due to her inconsistency in eating solids, since weaning at 14 months, we have given her Enfagrow forumula to help her get more vitamins. More recently we have been watering down the formula so that she will have a greater appetite for solids.
• When we went to the max dose on Zegerid, she would throw up the medicine notwithstanding buffering w/ Tums Cherry supreme and gas drops. We are relatively close to the max dosage.
• Her weight gain is fine.