Hi there, so I'm starting out on the controlled crying and keen for some advice and some reassurance. I'm currently only using it for nap times as she sleeps well at night. I've been trying since 11am and it's now gone 12 and she is still crying. I've been going in to the room every 10mins and not picking her up just saying Shhhh and putting my hand on her tummy. She's screaming blue murder and I'm finding it very hard. How long do you keep trying for as I feel ready to give up. Thank you.