Maintaining your starter
Once you've successfully created your starter, you need to feed it regularly in order to sustain it. Regular feeding could mean anything from twice a day to once a week, depending on your schedule and how often you bake.
Understand that the less frequently you feed your starter, the longer it will take to get it ready for baking. If you forget your starter in the back of the refrigerator for months on end, you can probably still bring it back to life; but it will take nearly as long as creating a new starter from scratch. For best results, feed your room-temperature starter twice a day, and your refrigerated starter at least once a week.