My LO fights sleep soooooo badly. Particularly for naps. Once I finally get her to sleep she is a good sleeper... But getting there can be quite painful. I try really hard to stick to only 1 - 1.5 hours of awake time before I start trying to put her down in order to avoid letting her get over tired but as soon as I start doing anything to encourage sleep (swaddle, pacifier, rocking/snuggling, white noise) she starts flipping out. She was just hysterical for 45 minutes while I tried to get her down. She wouldn't nurse wouldn't take her paci and wouldn't stop screaming. She finally passed out on my bed from utter exhaustion. HELP!! How do I help her fall asleep more peacefully.

ETA: she's 12 weeks old so a little early to learn self soothing techniques.