hand

villain 23/16/3b 6 over 200 hands
cbet in std raised pots: 43 (7)

Wasn't 100% sure about preflop since he's 3betting rather tight but all of it have been from the SB so I felt like A3s is good enough to defend.
Somewhat std spot on the flop but I'm always unsure what to do here. I think I'd in some way continue with a bit more equity like a BDNFD but I'm not even sure how (raise vs call) and what to do with the offsuit versions of this hand or also AQ, AJ, AT which should be somewhat similar to A3s here.