Do it how the NBA 2K14 community does it. They also use what's called the shrink wrap method. They import the NBA 2K20 face into Blender, then import a 2K14 head and "shrink wraps" it to the 2K20 headshape and make minor tweaks. Apply face textures, then export it as a 2K14 head model. They have almost the entire league complete. That's how you keep updating FIFA 14 and 16 even if they stop making the switch version. The community here might as well begin to master this method now. So if it does happen, it won't be an issue.