In addition to the information in § 30.00 of this chapter, the development plan shall include a development schedule indicating the stages and dates of actual development. If the development becomes more than 270 days behind the approved schedule, the City Council may, by resolution, remove the planned residence zoning and replace it with the prior zoning district for all or part of the zoning district, or the City Council may amend the development schedule by resolution as it may deem appropriate.