Schnell 911

Just wanted to reach out to you all and ask, how are you DIY your oil and filter changes without the use of a PIWIS Tester Motorsport (MT3G). I cannot imagine just using the bargraph shown on the ICD during this maintenance procedure. But maybe you all do, IDK. I want to attempt my first oil change at the end of the month so I have to ask. The difference between the min and max is 0.7 liters as shown on the ICD. Do you all fill 8.6 liters (0%) to minimum and add as necessary to reach middle of the graph or add until you reach maximum of 9.3 liters (100%)? Thanks. Or hell, maybe there is a substitution for the PIWIS that you plug into the OBD port to measure the oil level sensor - reading live data until you are at 8.95 (50%) liters and call it good. I would be confident reading the oil level sensors raw value of 52mm to 61mm over the bar graph indication.