I can definitely relate......!!!
My baby was/is a high needs baby. Very sensitive and colicky, and I was excited when I got 3 hours of uninterrupted sleep when he was 3 mos old...and 6 mos old...and 8 mos...lol. He's almost 11 mos and is finally starting to sleep for longer stretches @ a time, but of course we have the ever present teething situation that throws a wrench in the works, too.
My DH and I used to take turns walking/dancing/shushing/singing him to sleep for naps and at night - multiple times during the night, actually. Honestly, he was about 5 months old before he finally started taking naps in bed by himself (we cosleep w/side car crib).
The transition was rough. We discovered he would sleep for a couple hours straight if we performed an elaborate routine of laying him on the bed, patting his bum and shushing/singing to him for about 20 minutes. He was NOT pleased with this situation, I will be honest...he would scream bloody murder for 25-45 minutes every few nights, but then it was like he would "reset" and would sleep great...or great for him, anyway, haha!
We were graduating, packing up, moving halfway across the country, and getting ready for the holidays all at the same time. I couldn't get as much done with him in the carrier and worse, he was super restful and was getting towhere he'd wake up at every movement/noise, despite my attempts at white noise in the house.
Anyway, he's 11 months old and now that all of the moving/new job stuff has settled and he's a little older, he's settled into a pretty decent routine of morning nap, afternoon nap and bedtime around 7-730pm. He fusses a little when falling asleep but mostly because he wants to get up and crawl around. I still stay with him after he's nursed so I can pat his little booty and sing or shhhhh him - the whole process takes around 30 minutes.
When teething, colds or overtiredness isn't getting in the way, he sleeps sometimes 3-4 hours without waking! Haha!!! Which is awesome for him!
Dang... there are times I start thinking, "Maybe he's not really high needs and I'm just making it up..." then I actually write down all of the stuff required to get him to sleep for a few hours...or one of my friends enthusiastically shares how her 7 week old is sleeping 6 hours straight...and I am reminded that yes, he is high needs and no, I'm not crazy.
Oh yes... forgot to add - we do use a pacifier! At first I was adamant we were NOT going to EVER use one.. then we had tons of breastfeeding issues including mastitis, a breast abscess, oversupply, he had a lip tie and posterior tongue tie that had to be revised...and suddenly the binky situation didn't seem like such a big deal... He falls asleep with it in and spits it out in his sleep half the time.
Sorry for being super rambly!!! This has been a snippet of how we transitioned from him sleeping in arms to sleeping in our bed and finally to actually sleeping in the crib by our bed haha! If something doesn't make sense, just let me know, because it's late and I'm tired!!
Hang in there - I know it can be rough and some days are worse than others...just know that your hard work is so worth it! Your little one is blessed to have such a dedicated mama.