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.
Texas Law. After marriage, you can take your spouse's last name without applying for a court order. Most organizations in the U.S. will accept a completed marriage license as legal proof of the name change. This is the case even if the marriage license lists your old name on it.
In the US there's no time limit for anyone (men can as well, not just women) to change their name after getting marriage. There's no time limit because it's not a legal requirement.
There is no time limit for changing your name after marriage in most locations. However, it's recommended you begin the process soon after your wedding to minimize complications of having documents and accounts in your maiden name. Many couples start the process 1-2 months after marriage.