How long does it take to learn fingerstyle guitar

How many of you lot kno fingerstyle guitar? And how long did it take you to master it?

i know people who have properly mastered it in three months(but they completely stopped playing guitar with a pick)
also it takes less time if you practice on a classical guitar(nylon strings)
i also know ppl who took a year
it just depends on the number of hours you put
try this trick
practice whatever you wanna learn just before sleeping at night
and then when you wake up in the morning you'll find it easier to play

Why think about the timeline. Somewhere down in ur heart do u feel that u wont be able to get this technique right?
One suggestion:
Dont think..JUST PRACTICE.....
There is no such fixed timeline...The more u practice the better u get....

nylon would really help
but dont be put off if you use a steel string
either ways
exercises can be boring
so try this musical piece called romance/romanza (level: intermediate... but you already play acoustic so you wont have a problem)
it covers nearly all basic fingerstyle exercises
once you are done with this you should be able to play nothing else matters(intro) and other simple songs like nothing at all(keating) fingerstyle
keep practicing romanza to move on to harder pieces like fur elise and canon
once you achieve that finger style on hindi/rock/metal songs would be a piece of cake

There is Annies Song as well to learn..