NL20 SH AKo sqz pot trouble

IPoker, $0.10/$0.20 No Limit Hold'em Cash, 5 Players

BTN: $20 (100 bb)
SB: $12.30 (61.5 bb)
Hero (BB): $20 (100 bb)
MP: $27.27 (136.4 bb)
CO: $20 (100 bb)

Preflop: Hero is BB with A K
MP raises to $0.60, CO calls $0.60, BTN folds, SB calls $0.50, Hero raises to $3.10, MP folds, CO calls $2.50, SB calls $2.50

Flop: ($9.90) T A 3 (3 players)
SB checks, Hero bets $5.40, CO calls $5.40, SB folds

Turn: ($20.70) J (2 players)
Hero checks, CO bets $11.50 and is all-in, Hero folds

CO is 46/28, 1.5 AF in 168h. Seems weak to me

Flop: I cbet to get value from weaker Aces and 2nd pairs, draws

Turn: I figure I don't really get value from much, so I check, planning to fold to bets, since I don't see many hands weaker than mine that bet

What do you think about my play?