Birdie, why would you take it out, if it doesn't cause any pain?
Most people solve attacks within 3 - 10 flushes, and if you do one flush every 7 days, it means that you can do 3 flushes within 1 month, and 10 flushes within 3 months, you don't have to wait a whole year, especially if your stones are causing pain.
Are you trying to find an excuse for choosing surgery?