@Phillymouse
You're having a terrible time I'm so sorry. Remind me how old your little one is?
My son was crying when I was there, I tried sitting in the dark with him for hours and hours and it just made him more desperate to get out he was crying so much.
What worked for us was to following CC to the T. We made sure he had plenty of food. Even a small bowel of porridge before bed as we were dropping all breastfeeding/milk feeds. So we knew he definately wasn't crying with hunger.
We then did, bath, massage then story while having milk, teeth. And into his cot.
You really have to follow the script completely. Wait 3 mins, 5 mins, 8 mins, 8 mins etc. If you pick them up and have a cuddle it negates all the hard work you've done, that's what I kept telling myself. It was awful at first but it got easier.
Have you got a partner? Support network? I'd tell them you're really struggling and have someone to text when you're going through it to stay strong.
Ultimately when your little one starts sleeping better they will be so much happier. And so will you.