The only thing I can recommend is a good schedule and a consistent routine. What does she do when she wakes up? If she’s just waking up and whining for a few minutes, I would wait and see if she went back to sleep on her own. If she’s full out crying, can you comfort her and lay her back down?

Sleeping through the night is a neurologic.developmental milestone that is normal not to reach until 5 years old. Some reach it earlier, but it is ok if they don't. I had 2 perfect 12+ hour sleepers at you g ages. Now I have a 2yr old who thinks sleep is overrated. 😳😴 lots of coffee and reminding yourself you'll miss this one day.

Mine is 11 months also and not sleeping through the night it would happen when they are ready

I have no idea, dd was a good sleeper by the time she was 8mnths old. She loved sucking her thumb and fingers to self soothe. I hope you find a routine that works.

Mine just recently started sleeping the night and that's because I took away his bottle 😬