I just started reading the THe Mystery Method. I am a lil confused to how long does each phase of attraction should last. I mean after A2 when should i start giving IOIs(A3).How should i know when A3 is over and i should start conversation. How long should the whole phase last?

Alright, some phases take longer than others.
To figure out how far you are, and to determine
where you are in the phases, you need to kino
test. To get out of A1, throw negs until you get
IOIs.

After IOIs, do your "hands off" portion of the
routine. After you get some more kino escalation,
move onto A3. I always like to bounce in A3 so that
I can get to know her better. Take her aside and
get to know her. Give her IOIs, then TAKE IT BACK.

example:

YOU: blah blah
HER: blah blah
YOU: IOI, then say "i cant't even talk to you anymore."
and turn around.
Her: RE INITIATE THE CONVERSATION.

That's it. If she answers your questions, then you
know you're in A3. Reward her with an IOI.