Sam just took 40 ml from his bottle - 80% of it - a record! And he sucked it down in about 15 minutes and like a "real" baby - I didn't have to pace him, he didn't choke on it or anything. And I got some good effortless burps out of him. And he is not spitting up!
Not getting my hopes up too much yet, but if he keeps up the good work on his 2 night feeds, we may be able to increase our number of attempts tomorrow.