Baby takes forever to fall asleep?

My baby is 5 weeks old, and since she was 2 weeks, she struggled with sleeping. I have to rock her to sleep for 30 min to an hour to get her to fall asleep and then put her down! I eventually want her to be able to fall asleep on her own, but it looks like it will never happen. Any tips on getting her to fall asleep faster and eventually on her own? I use a swaddle, white noise machine and keep it dark. Thank you!