We begin reminding you several months before your domain expires in order to give you ample warning. However, you have until the expiry date to renew your domain, so you can do so whenever it suits you.
However, if you would still like to go ahead and renew your domain early, it can be done. Please click on this link. You will be directed to a login page, once logged in, the domain renewal page will be loaded and you can follow the steps to renew your domain.