Newborn sleeps in different room, adult STTN. Will not entertain throughout to sleep train

You can sleep train your baby, but please don't let her cry and soothes him/herself to sleep, as it is bad for baby development. When i sleep train my baby, if she cry, i will let her have pacifier, if till.to.a point where pacifier cannot soothes her, i will feed her milk. if your baby is big enough, like around 1 year old, you can try to like your kid sleep in different room. But if your baby is just newborn, it better to let your baby sleep in the same room with you so that you can attend to his or her needs.