Bed sharing to crib

So the past few days we’ve been trying to get Parker into her crib. She’ll let me rock her and put her in her crib, but about 30-45 minutes later she is awake screaming. During the day that’s fine bc her naps are usually only that long. But at night when I rock her and put her down, she does the same thing. Sleeps for 30-45 minutes and is awake screaming. I tried to soothe her for an hour and she would not fall back asleep and just kept crying. I even left the room to see if me not being there would calm her down. It didn’t. Cry it out is not an option bc my heart cannot take that and I honestly don’t think she’ll ever stop. Any tips besides CIO?