Standard River Fold?

Posted 4 years, 3 months ago

Blinds: $0.15/$0.30 (5 Players) BB: $61.53 (Hero)
UTG: $79.17
CO: $59.07
BN: $30.00
SB: $22.46

Preflop ($0.45) Hero is BB with 7 8

UTG folds, CO raises to $0.90, 2 folds, Hero calls $0.60

Flop ($1.95) 6 4 K

Hero checks, CO bets $0.90, Hero raises to $3.00, CO calls $2.10

Turn ($7.95) 6 4 K 4

Hero bets $6.60, CO calls $6.60

River ($21.15) 6 4 K 4 A

Hero checks, CO bets $31.20

Villain is 26/20/8 over 500 hands, solid player. After my flop raise doesn't deter him do I slow down on the turn? River??