C/R Checked to 50BB table - 50NL

Villain is 18/16/2.1 tagg who is pretty standard post flop n only thing I've seen him getting out of line is preflop 3betting wars. Not sure what to do here on the turn.

Bet small like $5.50ish and get him to spazz out with worse? Or is that wishful thinking?
Shove the PSB I have left?
Check behind?

Any comments on PF and flop?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) -

SB ($28.05)
BB ($21.40)
UTG ($80.10)
MP ($25.35)
Hero (CO) ($25)
Button ($25)

Preflop: Hero is CO with ,
1 fold, MP bets $1.50, Hero calls $1.50, 3 folds

Flop: ($3.75) , , (2 players)
MP checks, Hero bets $2.50, MP raises to $6.50, Hero calls $4

Turn: ($16.75) (2 players)
MP checks,

Far to many cards you don't want to see on the river to bet so small, I would just bet enough to get him to call. Shoving when he'll only call with overpairs, sets and KQ+ kinda sucks. You want FD's and 77-99 to call. Get value. You certainly have an odd sizing problem left.

Yeah the sizing that's left really sucks since you can't induce. I doubt he ever ever has 77-99 here with this line, i think that's just mega unlikely. I also doubt he pays a Q this way although it's more possible. I hate checking the turn just incase he has a draw here, but any large bet is getting no value from worse. I guess I'd half pot it to try to induce a draw to mistakenly shove and protect against a random A or K, or gutshot or whatever since I think we're good here an absolute ton. I think it's pretty likely most of his range is just air that's giving up on the turn or has some smallish non made hand equity. I'd bet like $8, cutting out any odds for draws and call a shove I spoe although not 100% sure.

Think flop is a call to allow him to continue bluffing since he's repping so small and doesn't have many worse made hands if any.

Decent spot to 3 bet preflop if he folds to a decent amount of 3 bets since you get to fold out a bunch of pairs, and aces and are likely rarely dominated when he flats. Flatting is also ok imo.

MP is so clearly bluffing I would just check behind, i'm 90% confident he does not have a flush draw.

I agree with Carroters in just about everything he said ... I like a $7-$8.50 bet to protect against any flush draws/aces he might have.

However, unlike Carroters, I probably don't call a shove here. Granted he's representing a small range, he is yet to show us that he bluffs at all post-flop.

It's an awkward line as he probably cbets flush draws, sets, and such...but I definitely see more sets here than flush draws.

He has air so much that I prefer a check and hope he bets again on the river. If I bet I bet 5.5
I wouldn't 3-bet the flop. I would expect him to cbet a draw and it's QQ+ at least some of the time.