We started super early. Caroline slept with us for the first 2 months of her life. Then I set her in the bassinet everytime she fell asleep or was done eating and was tired. I tried my hardest to get her used to sleeping by herself. We are STILL working on it at 10 months old. She wakes up at least 2 times a night needing attention. But I usually try to put her back in her crib. Lately, at around 3-4am when I put her back in her crib, even if she's out like a light, as soon as her head hits the sheet, her head pops up and I have to put her back in bed with us. Lol its the most frustrating thing!!!