oh gosh uhhhh idk, im not really a master at instagram or anything like that and i don't pay attention to these kind of stuff as much as i used to shdhfhg
idk maybe around the 1k followers mark? at that point you DEFINITELY already have an audience, based on my experience and from what ive seen from other accounts. oh also asking questions in ur captions and just generally engaging w ur audience hells a whole lot too.