The correct opinion maintained by scholars is that
Tayammum is nullified by what nullifies Wudu' (ablution). Tayammum is not nullified by the end of the due time of the Salah for which Tayammum is performed. Thus, one can offer more than one Salah as long as nothing has happened to nullify Wudu'.May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.