Beth is doing this too ATM, not sure what it's about. We have taken her cot mattress out and put it on the floor, so she doesn't hit the cot bars, although sometimes she goes off the side of the mattress or is sitting up when I get to her. Since we put the mattress on the floor she is down to one wake up most nights. But the last few days she has been crying in her sleep too, even in the car when I can see she is out like a light. Think it might be teething, she has the ones next to the eye teeth coming through, have you checked Jazz for new chompers?