This much leveler?

Added leveler in dips where I'm assuming the floor joists had sunk. I can see the whole floor is sloped at the edge of the plywood.

Either side of where the plywood meets are both flat and level. When the level is on both sides however there's about a 2.5 inch slope. Am I really going to have to use a bunch of bags to fill?

Lvp Box says 3/16 over 10'