Handling AK versus a preflop 3-bet

[StellarWind]

Hero raises A [img]/images/graemlins/diamond.gif[/img]K [img]/images/graemlins/diamond.gif[/img] from MP. 53/11 SB 3-bets. SB bets a normal amount postflop but doesn't raise nearly as much. Pretty typical for a moderate loose/passive. Now I could cap but I decided to just call and figure out what to do after he autobet the flop.

Flop Q [img]/images/graemlins/diamond.gif[/img] 7 [img]/images/graemlins/club.gif[/img] 2 [img]/images/graemlins/spade.gif[/img]

He bet, I raised, and he called. 5.5 BB to the turn.

Question 1: If he 3-bets the flop can I reclaim the lost BB by folding the river unimproved?

Question 2: Can I fold the river unimproved if he stop-n-gos a blank turn?

Question 3: The turn blanks and he checks. What's the plan? Bet-bet, free showdown, or free card and call?

Question 4: The turn is a small diamond and he checks. What's the plan?

Thanks.