Well last night did not go well. He took the watered down bottle fine, but was crying for the next couple of hours - seemed windy and in pain. We managed to miss his last ranitidine dose yesterday so could have been that, or perhaps the watery milk, or a combination of the two. I'm going to do the same again tonight and see what happens, but if we get the same I think I'll go back to dropping the ozs instead.