I don't have any advice, just hugs. My LO slept through the night from about 8-12 weeks and then not again til almost a year. She slowly dropped the night feeds though and when it was down to 1x per night I felt like it was just easier/faster to nurse her (more for soothing than nutrition) than try to get her back to sleep any other way. Around 11-12 months, she started sleeping through the night every now and again and recently (fingers crossed!) it's been a regular occurance.
I think part of it was like PP mentioned there were just so many milestones from 6-12 months (plus 12 teeth!) that she didn't get super long streches of sleep.