Sleep training 10 month old

I’m wondering whether anyone has experienced something similar. My baby has slept in her “next to me” cot since birth and can happily sleep 8-7 overnight. We’ve tried to move her to the cot in her own room for the night but she wakes up every couple of hours and cries for me. She can’t settle herself to sleep - I rock her to sleep for naps and going to bed, but as I said, she’s usually able to sleep through the night in her next to me crib. Do you think it’s a case of she’s just not used to the cot yet? Or do you think she actually can’t self soothe because the times she may have woken up next to me shes using knowing I’m there to soothe herself.

Anyone used the cry it out methods? I’m so against them but have heard good reviews.