Hi, my baby has slept through the night for 2 months. And before that slept with one night feed since 6 months after we did some gentle sleep training where I lay her in her cot and held her hand until she fell asleep (we used to co sleep). The past couple of weeks I have tried to wean her of needing to hold my hand so I have been sitting by her cot. If I leave the room she screams. It has been getting easier for her to fall asleep but this week she has started waking in the middle of the night for 2-3 hours and is wide awake. I have tried everything, holding her hand, feeding, cuddling, nothing will work. She will lie in her cot at points but continually pulls to stand up and I continuously lay her back down. I tired leaving her (against my better judgement as she is super sensitive) and she got beside herself and it then took 2 day to get her back in the cot without huge amounts of crying so I don't want to leave her to cry. I don't even mind sitting with her but 2-3 hours is killing me. I have brought her into bed the past few days as I was beyond tired. She had good naps and eats well. Any advise?