8 month old not sleeping

My daughter doesn't sleep!! She takes 10-15min cat naps through out the day and wakes up multiple times at night. She slept through the night from 2 months-6months usually waking up once or twice just to put pacifier in her mouth. But all of a sudden she's waking up 3-4 times a night, sometimes I feed her just to get her to sleep. It's exhausting. The only thing that has changed is I don't swaddle her anymore because of her rolling, but I use a sleep sack. I've tried not using it, using lavender oil, turning a fan on, turning the radio on quiet. Nothing!