Hi KMET and kirstym- I don't know if I will be of much help, but I'll try. When my DD was about 7-8 weeks old, she was able to find her fingers/thumb and start soothing herself to help her go to sleep. So I started to unswaddle one arm, and would help her in putting her hand in her mouth. (We stopped using a pacifier because it had become a prop, so we resorted to this). We still use the sleep sack, but now she is 11 weeks and she's been unswaddled since 9w5d, and is able to calm herself better. I was hesitant to stop the swaddling, but it seems to be better now that she is older. Her naps are better too. She just started day care, and that has presented a whole issue in itself, and she's no longer napping during the day...
Also- to help with the nights, we have a simple routine- she does not like baths, so we only do them twice a week. I breastfeed her in the living room next to my husband, which is not "typical" during the day (another sign it's bed time), then we have a few minutes of family time/chatting, then we go into her room (lights low), put her in her sleep sack, pray for/over her, kiss her good night, and lights out. She sometimes talks/fusses a little, but it's her best time, probably because it's the most consistent and she's tired from not sleeping well during the day. Hope this helps... And just make sure you don't keep putting the pacifier in their mouth to make it a prop! (Painful mistake for us...)