KOPS is just a starting point for weight distribution between hands, saddle, & feet. There are countless examples of other fits where KOPS doesn't apply either because of the bikes intended use, be it maybe a couple of miles at a time like a dutchie, or some styles of mountain biking, or because the weigh is not bourne by the sit bones like the fit on a recumbent or by elbows & shoulders like a TT bike.

But there are also countless examples of where it *is* an appropriate starting point. Road bikes.

In any case, to get back on the OP's question: RedShift Sports makes a dual position seat post that will move your seat 5cm forward to a TT position & up an appropriate amount for proper distance to maintain the same leg extension. Effectively it temporarily converts your bike to a TT bike & back again in an instant.

Most people pair the dual position seat post with aero bars because that is what it is designed to mate to. But I just use it to strongly stay in the drops for extended periods or to fight wind & can stay there until my neck, shoulders/arms get tired of holding up my torso. Then I flip back to the standard KOPS road position & carry on further on down the trail & faster on that segment than I was before.