You might want to do this where you just can't get the required DOF no matter what aperture you use.
What you need is a software called CombineZM.
The software are able to stack 2 or more images to achieve the final image you want.
i had taken 2 photos and stack them together, you can see that the DOF for the final image had increased.
The focusing point is at the eye.
The focusing point is at the body
Final stacked image