D.P.
I agree that it may be reflux. I'd speak to the doctor and see what they say. I had an instance where my daughter was terrified of her crib and what I did was, I went through my nightly routine-massage, story, lullabye and kisses, then put her in her crib, and laid my hand, gently but firmly on her tummy. I stayed there until she fell asleep. If she woke up when I removed my hand, I just did it again. CIO didn't work for me, but this worked like a charm. It gave her the comfort she needed but she was able to put herself to sleep without any external soothers. I started doing it at naptime and by the time she went to bed, it was much easier because she knew what to expect. It's very time consuming, but for me it was worth it. But definitely speak to the doctor to rule out medical issues.