Eli has been taking Ranitidine since he was a month old. He had pretty bad reflux issues, which caused him to choke multiple times. We had it under control with medication and dropped the medicine to just night time. It wasn't an issues until recently. He's been waking a night spitting up acid and burping with a very acidic smell. We did just start him on cows milk (adding an oz at a time to his formula) on his birthday. Do you think the milk could be causing it? Is it a sign he's lactose intolerant? He eats yogurt every morning and cheese every now and then, doesn't have any issues with that.