You can reset the time to next service display using the MFD. When reset, it takes a few hundred miles to start the new countdown.
The dealer (or VCDS) can change the service interval countdown from variable to time/distance. Even tho' my Passat should have been on longlife, it asked for a service after 10,000 miles. I phoned the dealer what service they had given it. The had given it an intermediate service, but the only difference between that and a major one was the pollen filter. They suggested just resetting the MFD and leaving the service for another 10,000 miles.