Hi. I swaddled both my kids and I totally believe it helps in the beginning. The tightness is a great sense of security, and as they lay there, they learn to soothe themselves to sleep. I swaddled both kids until about 4 months of age. But, I believe each kid is different, you have high maintenance, easy going...etc types of babies, which could make that whole transition hard or easy when the swaddling stops. My daughter was easy. She was sleeping on her own around 5 months. My son had a harder time after the swaddling was over, but I think breastfeeding made things harder with him (I did not bf'd my daughter). It required a lot of crying. Some people don't believe in the crying, but there are a lot of kind methods out there. I read Ferber's book, it's not as negative as people make it out to be. Very good advice on sleep in general that makes a lot of sense. I also read a sleep book by Jodi Mindell, similar approach, not as much crying. I took advice from both and did was worked best for our situation. Like started with naps...and bedtime was nothing. Still working on middle of the night--which is hard to do with husband, and sister. I recommend reading some of these books first.
But, basically, I think it is still early for you. The best time to start is 4-6 months and you will get an idea of how it will go. It is during this time where they start to sleep longer and wake up less frequently and do not need that middle of the night feeding. Which will work to your advantage. Also, keep naps and feeding consistent. And start a bedtime routine at this age. For example, dinner, bath, singing, reading...bedtime. Then, at the moment you put them to sleep, it does require putting them down to bed drowsy and will require some crying, but they just don't know any other way til you teach them. They need to learn to soothe themselves to sleep. Rocking, swaying, pacifiers, music...etc...they all are false sleep associations. They aren't the worst thing in the world, but if your daughter wakes in the middle of the night, expect that she will need that to fall asleep. My daughter had pacifiers, but by 5 months she was able to grab one and put them in her mouth on her own. I put several in her crib. If you are still giving her a middle of the night bottle, work on stopping that during this time.
Finally, do not do this until you are mentally ready. And give it a couple days. The crying is only bad the first 2-3 days. Some babies are worse than others. You know your baby best, you will know her types of crying, what is whining, what is tired, what is scared....and you will know how to handle it. Just remember, the key with anything with children is routine and consistency--and stick with it, it works.