Sick of rocking and bouncing to sleep!

My little one fights sleep so badly during the day. she is 11 weeks old. The only way I can get her to sleep is to rock/bounce for 20 min before she sleeps, and only for 45 min at that. We have a bedtime/nap routine which includes being swaddled, darkness, noise machine. I’m just getting tired of doing this all day long! Any advice on getting her to sleep on her own? I’ve tried crying it out, she will go forever. She already sucks her thumb to self soothe.