Hi J.,
I can totally sympathize with you. My son (now 6yrs old) would not sleep EVER!!!! I was lucky if he slept for 15 minutes straight during the night & he not once ever took a nap!! (he had severe colic as well - so it was tough).
But, by the time the colic subsided, he was about 9 or 10 months old & I was also starting to wean him from his bottle (he only had a bottle at night before bed - the rest of the time was a sippy). Anyway - our pedi said the same thing - let him cry it out. It was the hardest thing to do but it was worth it.
I remember the first night we did it. I tucked him in safely into his crib, gave him his teddy & shut the door 1/2 way & started his ocean music/light toy on the side of his crib. I sat out in the living room with my husband. We could hear him babble & then when he realized I wasn't coming back in the room, he began to scream so bad, our neighbors must have though we were abusing our child! It was awful!!!!
When I went to get up to comfort him, my husband sat me back down on the couch & sat on my lap so I couldn't get up. We had to follow the pedi's orders if we both wanted to ever get sleep again. And he cried for quite some time (it felt like forever for me) but eventually he stopped on his own & went to sleep on his own.
He woke up 2x that night & my husband got up to check his diaper & changed him accordingly & told me to stay in bed - he cried a few minutes after each time & then boom - he was out like a light.
Within a few weeks - he didn't cry at all at night, or when it was time to be put down for bedtime. And the crying wasn't as drastic over the 3 weeks either. It slowly came more to a wimper. Ofcourse we got up in the middle of the night to check on him & even when he cried we'd check on him, but we let him put himself back to sleep.
It was the best thing we ever did. Parenting is very hard, but all those people are telling you the hard truth - you won't be doing her or you or your husband any favors by keeping these ways up.
Another thing to keep in mind is that not all parenting techniques are for everyone. Follow your gut as well. But remember - it doesn't hurt to try all options or even make up a few of your own ideas to get through being a parent. I've always taken my mom's & mother in laws & everyone else's advice & I atleast tried them for a week straight. If I saw improvement, I kept it up & sometimes it worked - if i didn't see any results, I'd try someone else's idea or even my own. Follow your heart & your gut & as long as you give your baby tons of love & care & do what's best for her, you're gonna do ok. Just remember - YOU are the parent!!!
Good luck & God Bless. It sounds like you're doing a wonderful job & enjoy motherhood - it is truly the best!!!
C. B.