Want to marry according to two different religion how to register

Hi sir/mam...am a hindu girl from taminadu,India.my man is christian...interreligion intercaste marriage...our parents accepted for our marriage..we both wish to get married in both the religious style...first day ,hindu way of marriage in a hall,and the very next day in church.can i register legally the second day only which will be held in church..because his parents are very consious about registering in church...fo my parents sake,we wish to do in hindu way also...will that be problem if we register only the second day?? Can we do that??can u plz solve my issue.thank you