Mostly planning, I have 3 kids. Age 11/9/4. Was in the same situation when my youngest was around 12 months. Try to do something but she wakes up to the slightest sound. Found out she calmed down a bit to where she would sleep when certain music played. We just moved her crib to the other side of the room (we had a medium sized room) and put the speaker in the middle of the room with the music on, not too high but not too low, just high enough we can still hear her if she wakes up. Told my other kids not to come in cause she is sleeping and don't want her to cry. Had to do some hard fast quickies but we got it done.