My 11 month old daughter has just learnt how to sit herself up in her cot. She has been really good at going to sleep since she was born and slept through the night at 11 weeks. Last night it took 2 hours to get her to go to sleep as everytime she was laid down in her cot she sat herself up and wanted to play. She then woke up twice in the night each time sitting herself up. Anyone got any helpful ideas or suggestions?! Thanks