How do you get your baby to sleep for naps?

Joanna

My 12 week old who does not take a paci does not yet know how to self soothe herself to sleep. I'm not able to lay her down drowsy because she wakes up and cries. It's really hard to get her to sleep too. She doesnt like to be rocked, only bounced while we are standing up and even then still fights it and that gets really tiring. So I'm bouncing (and sweating) for every nap. What can I do?