My three year old does not sleep early and only dozes off around 2 in the night. What do I do to make her sleep early?

Will be good if she has a comfort blanket as well. And do start bit by bit. So for example she sleeps around 2 now, try to bring it forward to 1.30am then 1am and so on. Depending on how well she progresses each stage may take 3 days or up to a week. Probably some soothing music for sleep relaxation can help her sleep better too!