Full disclosure, when I was driving an ICE car I did all my own oil changes at home. However, 25 years ago I had to pay to have an oil change done.
And there’s nothing they could do that would speed it up.
The process this shop used was to empty the engine oil, put the drain plug in again, and fill the crankcase with new oil, run the car for 5 min with the new oil, drain again, then fill with more new oil.
In my mind, thats a pretty effective way to get the old oil out.