DD was always able to go to sleep by herself - from newborn days, I’d either hold her after a feed until she fell asleep, then put her in the Moses basket, or I’d put her in the Moses basket while she looked sleepy and she’d drift off. She still woke every couple of hours for a feed, but it was easy to settle her, and once she was about three months she was sleeping for a fairly long stretch at night - 11pm until around 5am to start with, then it gradually got longer.
She’s ten now, so I don’t remember exactly when she was sleeping through the night, but we moved her into her own room at around six months, so she must have been sleeping a decent length of time then. She was definitely sleeping through by nine months as I went back to work then, and didn’t have the stress of sleepless nights.
I’m well aware of how lucky we were, and this was absolutely nothing to do with our parenting skills and everything to do with her temperament! She’s our only child, and I have wondered if I’d been able to have a second, if they would have been the same or the complete opposite.
We did have two years (from age 3 to age 5) where one of us had to sit in her room until she was asleep, then sneak out, but once she did fall asleep, she stayed asleep unless she had a nightmare (rare) or wasn’t well (also rare).