u/Select-Honeydew255

My daughter will be turning 3 in June. Not sleep trained. Takes a nap sometimes mid day and goes to bed around 9:30-10. Putting her to sleep takes a good hour. She requires me to lay next to her. She will also wake up so many times a night to make sure Im next to her. If not, she will keep crying until I move her to my bed or move myself to her bed (she has a huge montessori floor bed). Is it too late to sleep train? If not, where do I start?