The service schedule is either long life for high mileage users, the car determines when it needs a service, OR every 12 months if doing less than 10K miles a year. This is irrespective of how the cars internal service schedule was set at the factory/dealer when delivered.
You need to get the car serviced at the dealers to maintain the warranty, or any VAT registered garage if they use genuine VW parts and oil. Failure to do so will likely mean that any warranty claim for engine gearbox issues will be refused, you will also reduce the resale/trade in value without the proper stamps in the service book.
Self servicing during the warranty period is definitely NOT a good idea.