Oskersmommy, we had the same problem with ds. He was 7 lb 7 oz at birth and by day 3 his weight dropped to 6 lb 2 oz. DS' bilirubin was up to 21 by the third day and my milk took close to 6 days to come in. The third day he was born they put us back in the hospital for phototherapy. They would let me nurse as frequently as possible and had me offer 1 oz of formula after nursing. The pedi also told me to pump for 10 min post feedings. I was taking fenugreek by the 4th day and I think it helped along with all the frequent stimulation.
Do what you feel is best. I WOULD NOT stop bf b/c then you will not be able to keep your supply up. I wish I had not even supplemented now looking back at it. Your baby will thrive and do well and get past the jaundice. DS was jaundice until he was almost 3 mo old. The pedi took his levels at our 2 mo check up and it was still slightly elevated. She said it was bm jaundice and not to worry, it would go away.
You just keep bf that precious one and when you go to the md office tell them you chose not to ff, because you wanted to keep your supply. They cannot do anything to you. If the md continues to not be supportive of bf I would definately switch docs.