Sleep training

Kate

So I have 1 year old that has up until now slept in our room. We're in the process of moving her to her brother's (2 y/o) room as I am due in 2 weeks with baby number 3. She did really well from about 7pm to 1am but then she woke up. She normally wakes up once a night and will not go back to sleep until after a bottle. So I woke up at 1, gave her a bottle and put her back in our room as to not wake brother and try again tomorrow night. However she then proceeded to SCREAM for hours. I try to calm her but nothing helps. I put her back and see if maybe she'll cry it out but proceeds to scream for 20 mins at a time every hour on the hour. It's like she will not calm down no matter what I do and picking her up to comfort her or trying to give her a pacifier makes her even more mad. I'm at a loss of what to do. She did this whole screaming thing for a week straight a few weeks back but seemed to get over it. Do I continue to let her cry it out? I'm really not trying to traumatize her but she will not calm down. Any input, tips, help etc is very much appreciated!