20k FT hand... wtf to do

[zizazziza]

Hero was loose, but has tightened up since the final 2 tables
Hero is CO with AKo and 650k (im average in chips)
Villian is Button with 1.4 mil (next person has 1.1mil).
I saw him call a PFR earlier in the FT with KTs
blinds are 20k/40k
folded to me, I raise to 120k (normal raise), villian calls
flop comes Q66r
villian leads out 40k, hero raises to 200k, villian thinks for a bit and caalls
turn comes 9
villian check, hero ?? (650k in pot, hero is 325-350k behind)