Thoughts on how we should proceed on the turn after villain checks to us? Sizing on turn? Call jam?

Hero (BTN): 47.05 BB
CO: 51.82 BB (VPIP: 26.67, PFR: 20.00, 3Bet Preflop: 0.00, Hands: 15)

Pre Flop: (pot: 2.46 BB) Hero has Qd Kc
fold, fold, fold, fold, CO raises to 3 BB, Hero calls 3 BB, fold, fold

Flop : (8.46 BB, 2 players) Qh 7c Jc
CO bets 6.35 BB, Hero calls 6.35 BB

Turn : (21.16 BB, 2 players) 7h
CO checks, Hero bets 8 BB, CO raises to 42.35 BB and is all-in