You have already consult with your doctor, as he would be in a better position to assess the condition of your child than me, No need to worry, they will suggest best for your baby.
According to American Academy of pediatric TSH Level
; !.7mU/L to 9.1 mU/L is normal range.
Jaundice/ total Bilirubin
level: less than 15 mg/dl
I would advise:
May be it is pysiological
Sun therapy 1/2 hour morning and evening
Repeat Bilurubin test after 2 days
Watch for other symptoms
I wish your child good healthh