i recently learned that some people can use LD in order to meditate. i have a few questions on this.

1) can anyone hear do this
2) how long does it take to learn/master (i heard several years)
3) can you do it whenever you want to?
4) main question, do oyu have to be asleep? can you just kinda decided to sit down for like 30 mins to an hour and meditate and then go or do oyu have to wait till sleeping that night.

especially in reference to question 3, i know meditation is different then just reg. LD. i'm talking about that i heard people say that hwen they have to meditate over something, they go into that state and then they can like find themselves in their meditation and ask themselves questions. since LD is linked to you counsious and subcounsious, they get a more accurate and un biased answer. so, can anyone do this?

if you need more clerification on my question, just think Yoda lol.