My son was always a great sleeper, slept actually the majority of his first year. Transitioned to a bed really well at 2.5. We gave his paci to the paci fairy at 3 years old and ever since then I've had to lay with him for him to fall asleep. If I don't he just screams and cries and I feel terrible. I sneak out when he falls asleep.
That wasn't so bad but now he wakes up multiple times a night and screams for me to come back. If I don't he comes into our room and screams until he gets tired of screaming and climbs into our bed or until we can't take it anymore and go to sleep with him in his bed.
I find myself either up and down the whole night or sleeping in his bed the whole night- both stink!
He also has night terrors where he wakes up screaming like a devil child and nothing will calm him.

Can you do CIO with a 3 year old? I think it's gotten this bad because now that he can speak so well and scream momma I want you, mama I want you to sleep in Dillon's bed. How do I ignore that? And on top of it, he now become resentful so if I CIO he's going to hate me!