My daughter turned 9 months today. And I'm having a really hard time getting her to sleep in her own…

My daughter turned 9 months today. And I'm having a really hard time getting her to sleep in her own bed agian. I used to could just last her down and she go to angel on her own and stay that way all night by herself. No she won't go to sleep unless she's laying by me and then I put her in her bed but she went stay asleep. She wakes up maybe an hour later and won't go back to sleep but as soon as I lay her down in our bed she's out! What can I do to get her to stay in her bed? There just isn't enough room to sleep comfortably with all 3 of us in the bed.