How can I mark a vaccine as not done after marking it as done by confusion #Vaccination

A. You can connect with your doctor they must be giving you a vaccination chart on that chart they are going to mark the vaccines from time to time which ones are done and which is next and also they will tell you the day when you need to get the vaccination done and for further assistance you can visit the tracker of vaccine and growth on the app itself over there also all the details are mentioned for you to update