Well ... in that situation the only way to realize if you're winning with AA post-flop ... is that you ask? and you do that by making a continuation bet ... what I recommend is never "slow play with AA"
A pair of aces, this is just one pair of aces. The more villains the flop sees, the worse your chances. You should be prepared to throw away your missiles and not overpay for them.
A pair of AA.!! is a wonder , but i prefer to play safe and considered that do not play a little at a time, because many times , if you go weak tend to paste double pairs because I happened.!!!
it depends on how preflop action has taken place and what information you have accumulated on your 2 opponents. personally with AA I have 4 or 5 preflop bet to prevent one of my opponents from paying me with too big a ranche. for all-in on the flop or on the turn. but even if AA is the best hand of the pack. I happen to lose with this hand because in the end it's the flop that dictates its law.