Trying to lose less chips against another big stack at Niagara

[FieryJustice]

So this guy gets moved to my table with like 700k chips 2 to my left. I have about 1.5 mil. He seems to be super respectful/nitty of my raises but he also also bets kinda big and aggro into everyone else. I also think he might be the type to turn into a check caller against internet kids that always bluff. Anyways, here are 2 hands.

I raise 88 from co to like 2.5bbs and he calls in the sb. It comes K94. He checks and I bet like 3/5 pot and he instacalls. Turn is a 7. We check, river is a 2 or something and we check.

A few hands later, I raise from co with KQ again and he calls in sb again. It comes AAQ. We check, turn is a 3, we check river is a 7 and he bets pot and I just call.

Are these super bad or should I be trying to get in there and make him fold and stack him, etc etc?