Bed sharing help!?

I have a 7mo and sleep has always been a big issue for us. We have been co sleeping since 3 months which helped a lot and I love it BUT...

I have to go to bed when she does at night or she wakes up right away! I don't wanna go to bed at 7:30/8pm! I want to be able to put her down and then come to bed in an hour or so and co sleep the rest of the night..

During the day she only naps for a maximum of 20 minutes on her own. But if I lay with her she will nap for over an hour. I rarely lay with her anymore during the day trying to get her used to sleeping on her own a bit but she never lasts more than 15-20 minutes.

ALSO

She STILL wakes up over 5 times a night... and she is seven months old! She nurses A LOT during the night sometimes it's the only way I can keep her asleep in the middle of the night.

Things are so much better than they were those first few months but man I am still so exhausted. I hoped as she got older she would naturally start sleeping better. But she isn't a newborn anymore ya know. I feel she should be sleeping better than this.

Any insights or suggestions?