[SH] NL50 TOP 2 pair on flop, river decision?

villain is a reg
he bluffed me once in a 3bet. OOP he bet 3 streets half pot as bluff with AK on a 996 Q 7 board.

Flop: he bets pot, the bigger the bet, the better the hand. SO i try to get as much value as i can from big Aces

Turn: OESD completes as does AJ. Still have to bet. Maybe bigger sizing?

River: Don't think villain can call again with AQ+
Do we bet/fold like 11$?
or just c/f?

Prima, $0.25/$0.50 No Limit Hold'em Cash, 2 Players
Poker Tools Powered By Holdem Manager - The Ultimate Poker Software Suite.

Hero (BB): $84.35 (168.7 bb)
SB: $49.89 (99.8 bb)

Preflop: Hero is BB with A 9
SB raises to $1, Hero calls $0.50

Flop: ($2) A 9 7 (2 players)
Hero checks, SB bets $2, Hero raises to $6, SB calls $4

Turn: ($14) J (2 players)
Hero bets $9, SB calls $9

River: ($32) 6 (2 players)
Hero checks, SB bets $33.87, Hero ?