[YouCantEscape]

Another way would be to 3bet this flop. The fact that he is nitty preflop, doesn't include that he is nitty postflop. And in your post you wrote that u had the impression that he was pretty bad postflop.

Many bad nits go broke here with almost every pocketpair. So a 3bet might be good against a bad postflop player as well, as an overcard on the turn might kill your action here.