Self soothing

Our daughter doesn't always self sooth but she will go back to sleep with us in the room without having to pick her up.

We did this by having a recliner in her room and sitting in it and telling her to go back to sleep, to lie down, we are there and that she is a good girl.

She will sometimes wake up and go back to sleep.

Feel free to message me and I'll go into more detail xx

You cannot teach it, despite what the sleep training industry is saying. Self soothing is something we’re able to do AFTER we’ve developed the prefrontal cortex, that can regulate our emotions. It doesn’t start develop before 6/7 years old and it’s not fully developed until 25yo.
You can teach your baby to not signal their needs (physical or emotional), if you stop answering to their crying.
Some baby are naturally less needy so they can “self soothe” (they’re not actually self soothing but they’re more “chill”, less sensitive, so they require less emotional support to calm down and fall asleep).
This is why usually high contact sensitive children don’t respond well to sleep training and they’re able to cry until for hours they throw up while other children can cry for 5/10 min and then can fall asleep (and this is one of the issues with sleep training as they present you a one-fit-all solution without taking into consideration their temperament).