Mintycat, you are doing really well! If you are determined to BF then it will all work out fine, your baby must almost be 3 weeks now and will start taking in more at each feed and last longer inbetween.
My boy was also sleepy and jaundiced and needed phototherapy, I had to supplement with a bottle but cut it out as soon as his weight was back up, the breasts take about 2 days to adjust to a new feeding requirement, and thus after 2 days of feeding every 1.5-2 hrs, he was back to needing to be woken for feeding (at least every 3 hrs to get your milk supply going initially, but if you are able to give so much EBM your supply sounds fine).
At 3 weeks, he took 7-15mins each feed, with the exception of one 30-40 min feed each day, took 8 feeds/day, gained wgt well, and still prefers the breast to bottle (much to my dismay as I am back at work and want him to take the bottle). It was a struggle for me and I don't think at your stage I was able to pump out nearly so much milk, so well done!
One good way to get up supply is after that feed, to pump from the breast your babe fed on first for that meal, just an extra 1/2 oz is good enough to stimulate more milk