Hi, congrats on your new arrival!
Firstly, please dont't give up on BFing. Since you have noticed a marked improvement in how much you can pump, then please continue to do so. It will also be good to latch on your girl first, then supplement with FM if needed. After each feed continue to pump to stimulate more milk.
When my girl came back from the hospital she was slightly jaundiced but didn't need to be hospitalized. My mum brought her downstairs in the mornings/evenings, around 8-9am and 5-6pm to let her get some sun. You can try doing it as I was also told by the nurses at the polyclinic to do so.
Try to avoid ginger as it will not help with the jaundice.
Keep latching, keep pumping.