You were doing the best for your baby--please, please don't feel that you caused his hospitalization. A lot of babies get jaundice and need to be under bili lights. It's not a culpable offense, truly.
Talk to a lactation specialist if you need to dry up your milk. They can recommend some extra things we can't here on this site
. The other suggestions were good, though.
It sounds like his latch was incompatible with nursing, for whatever reason. I hate to harp on the same topic, but it really might be different this time. I nursed several children and had kiddos that took to it like pros from the start and others where both of us struggled. If you do decide not to try, don't let other's comments bring you done. It's nobody's business but yours.
You had a rough time with your first one; usually recovery, etc. goes a lot more smoothly when your body has gone through it before.
Just take out the cabbage leaves before they start steaming...they don't smell so great then