If you're that concerned about it, then drain the oil. Leave the filter. Refill thr crankcase. Crank it and let it run for 5 minutes. Then drain it all again, including the filter.That won't flush much of the old oil out because the old oil is dispersed throughout the engine. High spots and low spots, front and back. The pint will take the gravity path of least resistance. Might get 1/10 of it out or something like that.
OR, take a deep breath. Move beyond your OCD and just change it all normally and don't worry about the dripping at the end...