Very hard spot vs this kind of donkey with AT, definitely I would just called the flop and look the turn, if turn comes that J, I would folded to his all in, if he checks and the river comes that K, this is not his stack, this is my stack!
I think your bluff is bad, this player isn't folding too much as you saw, no bottom pair, no flush draw, and your hand isn't complete.
Vs this kind of donkey I preffer to have patience and wait until catch them, they will auto-destroy.