Does your 6 mo put themselves to sleep?

I’m always having to feed her to sleep or rock her or she’ll cry and won’t stop. I don’t like the cry it out method but my back is seriously killing me rocking her all the time. Sometimes she’ll still be a little awake before I put her down and she’ll shake her head back and forth before going to sleep. Last night I was rocking her and she was shaking her head in my arms so I went ahead and out her down and she put herself to sleep! I hope she’ll start doing this more often lol