You already do only one load at a time. Just because you’re doing 1/2 in the wash and 1/2 in the dryer simultaneously doesn’t change the math.
In any case, I happen to sell appliances. If you can get your hands on one of the 2-in-1s with an inverter heat pump, they seem to be pretty popular and have good reviews. And the cost can be offset by the energy savings as they’re very energy efficient compared to a standard washer/dryer pair.
I recommend the LG or GE model. Avoid Samsung.
Fucking do it. Anything that takes down Nvidia’s CUDA Monopoly has my full support.