DD is 8.5 months and we can't go on like this. She's waking every 45-90 minutes all evening and insists on being fed, then around 11 she's waking up just because she feels like it and won't go back to sleep for hours. She won't feed to sleep or be rocked, she just wants to play. If I leave her in the cot she yells her head off. She's tired but won't sleep and DP and I have had enough. She just won't settle down, even in our bed. HELP!