No! Your marriage license doesn't expire, so there is no deadline for a name change after marriage. You don't have a time limit that you must adhere to in order to change your name after marriage. In fact, many spouses and newly married couples may choose to wait to “see what happens” after they get married.
If you are submitting a change to your personal name, you must provide acceptable forms of proof. Acceptable forms of proof include: court order changing your name; marriage certificate or divorce decree; driver's license, or a non-driver's ID card; valid passport; or immigration documents.
Changing your legal name in Georgia is not a difficult process if no one objects to your petition. In many cases, it can take longer to change your name on accounts and other documents than it takes to change your name with the court.