Game is fairly active. A mix of aggressive loose and tight passive old men. Main villain is pretty snug. Hasn't shown any crazy hands and this is his first 3 bet. However, I this is only my 3rd orbit.

Effective stack $1k.

UTG straddle $10, UTG +1 raises to $45, UTG +2 calls $45, MP calls $45, CO 3 bets to $245, btn folds, HERO (JJ) ???

Pot now contains $395. I have $1.2k, villain has $1k, the other players that called have average stacks of $600-$900, so no one is super short or super deep. At 200bbs effective my thought is either to jam or fold. I am also concerned this is a squeeze and the original raiser wakes up with a big hand. Not sure what to do here, any thoughts are greatly appreciated.

fold. his raise is big. Snugs don't usually 3bet AK like this. It's most likely a higher PP than yours, especially if he's pretty snug.

Just fold .. Nothing indicates that this is a good spot to take a stand with JJ.

Given the action I like a quiet fold. It is a situation that is hard to judge. Against many villains there is a decent chance you are coin flipping with a good amount of dead money but you don't know how often yet. What it comes down to for me is that there are a lot more ways you can be behind then ahead. The only likely hand you beat is TT and there are both more combinations and villain is more likely to raise QQ+.

Best case scenario is that of all the hands that still have to act based on the 3-bet, none of them have better than AK? Just fold, pretend you had 7-2off and move on.

Sigh fold. It's unfortunate to have to fold Jacks but you don't really get worse to call a jam and better hands practically always call. Maybe you get QQ to fold, but he might not even cold 4! QQ 100% of the time

Yep, sigh fold. I hate it, but it's the right play.

Pretty easy fold.

Tough spot, jamming if I think he isos aq, folding if not

Calling is no good

Fold.