Then step up and take it on the rise, slice works as well. But I'm yet to meet a rec player who's good taking CC BH moonballs out of the air. Down the middle, or to the FH side - well, maybe.
You can hit a driving slice from farther back, taking it hip height. High slice is a bad alternative, the only reason to do it when you cannot move to have better contact point - either because his shot is too good catching you off-guard, or because you are overall immobile due age, weight or injury, or being lazy bless!
Just imagine, you always take such balls as high slices from the baseline - what if I roll it high and heavy over there and shade into the net? Your response is floating, not dipping into my feet. It is slow for me to intercept. You wait for the bounce, so I have a lot of time to transition. The only thing you can go for seeing me approach will be slice lob - again, not very easy from there. You leave too much openings making this your major option. An emergency/situational shot? Yeah, sure, prepare your racquet high, behind your head, turn sideways, slice outward, cut strong, keep trajectory horizontal rather than arcing. You can cut this sharp and short as well, if your hit it more downward, or float deeper.