How do I get my baby to sleep?

My daughter is 2 months old now and she mainly falls asleep while feeding. She sleeps really well at night (we co-sleep) but during the day is tricky. This is how the day usually goes: After waking from her night sleep she's good by herself for about 15 min. With a lot of entertaining or moving locations when she gets fussy we can keep her entertained for maybe an hour if she just woke up from the night sleep or a really long nap. Her fussiness starts with a cough-like sound with more an more wailing mixed in as times goes by. So then I get her on the and it takes about an hour before she's out cold and I can set her down (otherwise she wakes up immediately). But even then she'll only sleep for a few minutes before waking up. Then the process continues but the length of time I can keep her not fussy gets shorter and shorter and she seems to want and not want the at the same time. So I try some holding and swaying but it usually doesn't calm her down so I eventually put her on the again and then she finally pes out. This is her mid day nap that usually lasts an hour or two. Then the process starts again until she goes to sleep at night. Now I know she can't be hungry every hour especially since she's a very efficient eater when she's hungry and you can tell she doesn't want the sometimes. So I definitely think this is a sleep thing. The problem is she'll very rarely go to sleep any other way unless she's totally exhausted. I've been trying to use a pacifier but sometimes she takes to it and sometimes she doesn't. I can't even begin to imagine how to teach her to sleep without the because as soon as you tear it away from her she starts wailing immediately or becomes wide awake and will start wailing shortly. I don't mind feeding her to sleep sometimes, maybe that's the problem, but I don't think it's necessary every hour. As this is my first child I'm not really sure how much sleep she should be getting either or if it's normal to start getting fussy after 15 minutes of waking. Any guidance would be greatly appreciated!