Winterizing Options

I think it would be great if there was an option for winterizing. I do not have to have my system blown out but I do have to shut off the water and run through my cycles to purge through low head drains. When I run these cycles the system records it as gallons used. I understand the the gallons used is an approximation but multiple runs of these “no water cycles” throws off my calculations to the tune of 1200 gallons/schedule run.