Sleeping

I don't plan to "sleep train" my daughter ever. I also don't really understand it. If we have a routine is that sleep training? I have found that my parenting style is VERY "go with the flow". I'm considering being a SAHM and I don't need a rigid schedule, though I do think routine is important. That being said, we go upstairs at 11 every night and she is usually asleep by 12ish. We turn the lights out, start our white noise and she nurses or is rocked to sleep. I am confused as to If that is training? She dictates that schedule, not me. She actually sleeps the way I did while I was pregnant with her.