I feel for you. My daughter has CH too. Such conditions warrant immediate medical attention since it could affect her development. My daughter showed an abnormally high tsh at of 400+ at birth, and my pediatrician did a blood test again for her at 3 days old. Though it went down significantly to 100+, the pediatrician was still concerned. She was immediately put on thyroxin on her 4th day to ensure that her development would not be affected. My pediatrician ran another blood test on her 4th day too and tsh jumped back to 400+. A good pediatrician will ensure that all abnormalities are identified and recommend treatment ASAP.
Now that you're seeing dr Loke, you can rest assured he's a good doc. I went to him for second opinion and he's very patient and knowledgeable. I'm currently with endocrine doc at Kandang Kerbau Hospital for my girl's CH. my girl is now 7 months old and like any other baby.
Pm me if you need someone to talk to. =)