17 month old and cry it out

My 17 month old daughter has had reflux since she was 3 weeks old. She is currently on prevacid 15 mg capsules. She had an appointment today and when I told the Dr she sleeps with me she looked surprised and disgusted. I explained that it’s the only way either one of us get any sleep. She told me that Emma’s night wakings are behavioral and to make her cry it out and when I told her I’ve tried that but she gets so worked up that she vomits, she said to just let her cry and vomit and she will learn to sleep. I personally think that’s ridiculous especially with a child with reflux. Please let me know your thoughts and opinions.