[Obv I am not a strong 3handed player]

This time BTN is a mega mtblr who has a 1BB/100 winrate over 2.5M hands. Recently he's been playing back at me more in sessions, though historically he has played very snug and let's me 3bet him all day.

PF and flop are std. I really want to fold to his turn shove for three reasons. If I had an Ace I don't think he expects me to fold, my range is polarized when I bet the turn (maybe I'm wrong?), and he's mega mtbling and he's less likely to be getting out of line.

I don't think he'd shove with a pair+draw here and that's a key assumption that could also be wrong.

PokerStars No-Limit Hold'em, $1.00 BB (3 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

saw flop

Hero (BB) ($100)
Button ($103)
SB ($106.60)

Preflop: Hero is BB with A, K
Button bets $3, 1 fold, Hero raises to $9, Button calls $6

Flop: ($18.50) Q, 8, J (2 players)
Hero bets $11, Button calls $11

Turn: ($40.50) A (2 players)
Hero bets $26, Button raises to $83 (All-In), Hero..