Sleep... or lack there of.

Anyone else's baby go from sleeping through the night, to waking every other hour? She's not hungry, she just wants to sleep with us. I can't let her lay there and cry. So now it's cosleeping with a baby that wakes hourly to nurse for 10 seconds and go back to sleep. I cannot sleep at all cosleeping because I'm scared I'll suffocate her. From 6 weeks to 5 months she slept 12 hours straight. I got too used to it 😩