A sub-district may be discontinued upon petition to the governing body. The petition shall as nearly as practicable meet the conditions specified in section 26b.1. Proceedings shall then be had as nearly as practicable in accord with the provisions of sections 26b.2, 26b.3 and 26b.4. A petition for discontinuance may not be submitted within three years of the date of organization of a sub-district.
70 ILCS 405/26b.9