First, firm up you slice approach return of serve so it bites and skids, not floats and sits.
Then, depends who you're playing against. A peer would mix spins into your body until you defend, then hit wide. A lesser player will fall apart and start to press on his serves, double fault, or push them in and make a mistake.
Better target is to stand just behind your service line, step in one and a half steps to slice a low skidding approach, then get yourself a couple feet from your own service line, split there, and see what mother nature gives you.
Since you're better than 4.0, you can't make it any farther towards your service line unless you are a sprinter.
Live with the resultant low or half volley, use it as another approach shot.