2017 Tundra 5.7 with p0356 code

Had this truck for about 4 yrs now pre-owned and the other day I had my engine light as well as traction control off light appear. I didn't notice anything while driving however when i put it in reverse it acts like it wants to die. I have swapped coil number 6 with a different coil to see if the code followed it didn't it stayed on coil 6 so I replaced all spark plugs with new double platnium bosch brand, cause I've had them sitting around for a while at the apartment. Then the truck acts like it really wants to die while idle and reversing also you can now hear my AC clutch engage while idle which I never heard before. Any help is appreciated thanks.

 

Any resolution? Mine throws a p0356 as it shifts. I have changed ALL the packs, ALL the plugs, the connector on Cylinder "F" (6) and checked the wiring harness and the problem still persists.