NL20 SH QJo vs pot river

Grabbed by Holdem Manager
NL Holdem $0.20(BB) Replayer
SB ($22.62)
Hero ($20)
UTG ($20)
UTG+1 ($18.60)
CO ($17.21)
BTN ($11.21)

Dealt to Hero J♥ Q♣

fold, fold, CO calls $0.20, fold, fold, Hero raises to $1, CO calls $0.80

FLOP ($2.10) A♥ 4♦ 7♦

Hero checks, CO checks

TURN ($2.10) A♥ 4♦ 7♦ 3♣

Hero checks, CO checks

RIVER ($2.10) A♥ 4♦ 7♦ 3♣ K♠

Hero checks, CO bets $2.10, Hero folds

CO wins $2

76/8, afq total 36, afq river 59 (17, raise cbet 27% (11), fcbet 36, 51h

notes:
snap call cbet w TPTK OOP, check turn and river

played after: NL20 SH A8s vs minraise on flop

this time I dont cbets because noticed that he does not really want to fold. But on river - he can really be bluffing, his agreesion on river so far is also high. Maybe I should make a small raise?

Or annother option - bet river repping K? Bet about 1/2 and see if he bluffraises on river.