Is there some way to export the animation from Blender so that only the animation keys I created myself are saved in the fbx and not on every frame?

Question

Animation

The problem is this: during normal export to fbx, animation keys are automatically assigned to each frame of the animation. From this, it begins to weigh much more if it were exported only with the keys that I created. Is there some way to export the animation from Blender so that only the animation keys I created myself are saved in the fbx and not on every frame?