I am running out of time and have not read the replies, but I started letting ds2 hold a sippy cup of water while he nursed, then he would remember the cup in his hands and take a drink, then nurse, then drink, and so on. Sometimes he was so mad at that sippy cup and would throw it off the bed, but not many times. He still nurses to sleep for nap, but for bed time, he likes his sippy cup, here and there will "sip" at the boob, then turn around and hold his sippy cup, babble then fall asleep.
I also made sure to get a sippy cup that resembled a nipple shape. I guess I could have got a bottle, but I like being able to say he doesn't drink from a bottle