So I always read on here about people wanting to know which method they should use to get their baby to sleep and to teach them to self soothe, and most of the time people say the baby is too young to start sleep training....so when is a good age to start?

I have a one month old and we feed her, hold her for about 15-20 mins until she falls asleep, and then put her down and she sleeps anywhere from 2-4 hours. In your opinion, when should we start trying to put her down somewhat awake and letting her fall asleep on her own? I love helping her fall asleep, but I know she needs to do it on her own one day! There have been about 3 times where she has fallen asleep on her own, I’m just there to put the pacifier back in! Lol any advice or opinions are welcome! Thanks mamas 😊