From about, 2 years old.
Naturally my kids did this.
I always went by my kids' cues. For sleep and feedings.
I just also found, that 'expecting' them to sleep all night, was just sabotaging and induced frustration. Because, a baby just wakes and needs to feed. It just is.
So if you expect... a baby to sleep all night... it is really just frustrating.
Hence, people "sleep train" because of the waking.
But I just accepted the wakings and feedings on-demand to be just the norm for a baby. Because, that IS what a baby is and does.
And once they got older, they naturally sleep longer and now, all night.
It just is.
Sleep trained or not, does not make one baby better than the other.
Or dependent or independent.
I even co-slept.
My kids are super well adjusted and independent and individual.
I don't know how old your baby is.