It sounds like you've been doing your research! :)
Late onset jaundice, aka breastmilk jaundice, usually completely goes away by 8 weeks. :)
Has your doctor performed tests to rule out pathologic causes for the jaundice?
Here are some quotes from The Breastfeeding Answer Book (2003) pg 264:
If a baby is growing well and the mother's milk supply is adequate, the doctor may want to do tests to rule out causes pathological jaundice. Breastfeeding can and should continue unless the jaundice is found to be caused by a metabolic disease such as galactasemia.
Prolonged jaundice or elevated bilirubin will eventually clear on its own without interrrupting breastfeeding, although it may take up to three months before the bilirubin levels drop to adult levels.
HTH! :) If you have further questions or need more info, don't hesitate to ask.
Breastfeeding should not be interrrupted even in the more severe cases of jaundice, either to make a diagnosis of breast milk jaundice or for fear of kernicterus unless the serum bilirubin concentration is 20 mg/dl or higher or rising rapidly. The proved benefits of breastfeeding far outweigh any theroretical advange of reducing milk to moderate jaundice.