Hi AstaHK,
Have you tried osteopathy? It's a bit gentler than chiropractic but quite effective. I'm a massage therapist and I work with an osteopath named Jonine Nash. She specializes in pediatric osteopathy at our clinic. She also works at Matilda hospital. The clinic is Sutherland-Chan Centre on 50 Stanley St. on the 19th Floor. I'm a fan of chiropractic with certain things, but I would recommend that first. The number there is 25445838. I had some osteopathy done on my baby a few months ago before Jonine started working at our clinic and I found it quite affective for my baby and her issues.