My approach would be to just call pre. I think hand is bit too weak to 3bet. DS I would not mind 3betting or if we had like AJTT with nut suit. I doubt this is 3bet even as K high suit.
On flop would go for 1/3 pot cbet. Reason being our showdown value is on weak side and we have reasonable blockers to villain continuing range with all of our cards really. I think on such high card monotone flop we are probably expected to cbet quite a lot like 70-80% of our range with 1/3 pot cbet in trainer. As played turn fold is perhaps bit weak but I would probably fold also and not try any float play as default. Problem is lack of showdown value and somewhat improvement potential when we get to this turn spot after flop check. Hand like QJT8 with flush blocker would be good to check and then we could call turn and evaluate river. Actually having some outs to very strong hand.
I will check now from solver view:

In solver plo50 rake SB open raises 36% and fold to 3bet 43% of time. 4bets 15% of time. What I would expect to happen in real life is more like call 60-80%, 4bet bit less often and then fold 10-30%.
Then on flop our range would look like this (closest to QJ6 flop I found from trainer):

Ok so my assumption on cbet frequency was off. I did actually check BBvsBU spot on same flop where it was over 70% but in that scenario BU is going to have wider range and of course when we are in position we have option to take free turn so that also tighten cbet frequency. Anyway if we look similar hand like lets say QJTT with T♦:

Except solver is not going to have QJTTss in its range. Actually kind of tough to check QJT with one spade that would not have wrap or two pair as those are pretty much not in range. But when we almost purely bet hand like QJTT without any spade for small size then one with spade is definitely higher EV bet blocking flushes. Also make more potential bluff or call hand on later streets when we hold that spade.
Also SB is supposed to continue pretty wide versus small cbet:

So I would not expect SB to fold two pair or better most of time but we will definitely get stuff like one pair+flush blocker and probably some straight draws to fold more often. Meaning EV of flop bet increase.