Sleep regression

So baby is about 9 months old now and until a few weeks ago I could brag about how she sleeps 10 hours straight. Not so much anymore. Research sounds like a sleep regression is normal around this times. Anyone else feel like they're going backwards? Last night baby slept 9-2 and was up until 5 laughing which should be cuter than it is at 2am. I don't know how to keep her soother we don't do anything differently and stay in the dark room and all I do is nurse her and try to get her to go the f to sleep! Not so much!