Can anyone find a fold here?

Villain is running 17/3/1, over a pretty good sample, like almost 800.

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) - PokerStars Converter Tool from FlopTurnRiver.com

saw flop | saw showdown

SB ($12.15)
BB ($22.80)
Hero (UTG) ($29.09)
MP ($26.08)
CO ($26)
Button ($12)

Preflop: Hero is UTG with J, A
Hero bets $1, 4 folds, BB calls $0.75

I'm thinkin that he's prolly got A7s-AJs (Maybe AQs), ATo-AQo, 77 - JJ (Maybe QQ), KJs+, KQo. I really think he woulda 3bet QQ+, AK, AQs, but I also thought that he's the BB and could be calling atc because he's a station with a PFR of 3.

Flop: ($2.10) 6, 7, K (2 players)
BB bets $0.70, Hero calls $0.70

His small donk bet smells like he's tryin to figure out where he's at in the hand. I'm def not folding; but in retrospect I prolly shoulda 4x raised because I think the float turned my hand face up for a draw. When he overbets the pot OTT I tank for a long time tryin to decide between a fold or a shove cause I had a plan for a c/r or psb but not this and I don't think I'll stack him if another falls otr.

Turn: ($3.50) 4 (2 players)
BB bets $5.25, Hero????