My LO has been sleeping through the night since 7weeks and within the last three days, she's sleeping from 8:30-6:30/7. She is EBF and clusters from about 4:30-8:30, every hour on the hour. She doesn't wake up at all at night and hasn't since 7weeks old - she's now 13weeks. My DS did the same thing. He was in his crib at 8 weeks. DD is still in her rock-n-play; we just moved and her room isn't ready yet. We will see what happens when she moves in there haha! Good luck!
Your baby will eventually sleep through the night, but assuming your baby is roughly 3-5mo, you can come up with a soothing routine to promote sleep, but if your baby is waking up, he/she is hungry and needs to be fed whether or not it's ideal for your own sleep.
Re: Getting baby to feed only once at night???