We have the same problem with our nearly 10mth old daughter too.

She refuses to sleep before 830pm/9pm (last night it was 11pm!!!! ) and when she finally does get to sleep, she still wakes every 3 or 4hrs..... we are sooo tired.
Feel like we have a newborn again.
Her day sleeps aren't that great either like yesterday she only slept 1hr total all day
Pulling our hair out here.....

Looking forward to hearing other stories and possible advice too.