I don’t know much about the goat’s milk, but I would think if he did OK with it previously then he is probably OK with it now.
Dr. Phillips suggested the smooth dissolve TUMS but make sure you get the TROPICAL flavored b/c they don’t contain hidden dairy/soy. I crushed up half a tablet, added a little water to it, sucked it up in a syringe and gave it to Sarah that way. i think you can give it 4-5 times per day but DON’T quote me on that (I may be thinking of mylanta there…)
OK, I’m second guessing myself now on whether to get Tropical or Fruit Flavored…hmmm…just make sure you read the labels (peel back and read the hidden label)…or hopefully someone else will remember. I also don’t know about TUMS causing a rebound effect…I wouldn’t think so, but again I’m not sure. 
GOOD LUCK!