How do I get my daughter to sleep in her crib? She will was only sleeping on my chest but she decided to finally sleep in her rocker, and now no where but my chest and the rocker, she wakes up. She finally slept through the night by herself in the rocker(she just started to sleep in that).. she is 3months old but was born 6weeks early and spent time in the nicu.. so she slept most of the time in the nicu on me.. also I need help with my anxiety of her sleeping by herself, like she had breathing problems and now I’m very nervous about her sleeping, at anytime and anywhere, that she’ll have problems with breathing again..