THyroid hormones level

my baby digonised with hypothyrodism since he was 50 days, he has been taking thyroxine since that time, he started with 50mg per day, after some time he had symptoms of high heart beeting, diarea (diarrhea) and fever , so we did the test again, he had normal TSH but high T4 so his doctor decreased his dose to 25 mg per day, but after three months we did the test again , this time his TSH was very high  but T4 and T3 and Free T$ and Free T3 were at normal ranges. his doctor thinks that we dont have to increase the dose, Please could u help me. i am very worried about him as he is baby 9 months old, and till now he cant sit without support.
please help me.

[ChitChatNine]

Welcome to our Community.  

[Smilerdeb]

Is your baby under a Paediatrician? If not..I suggest that you get a refferal for one.
Post his levels here so others can comment......also remember that babies and children have higher levels than adults do so please dont compare them to your levels.
All the best :)