You only need to make a wallet backup once, when you first create your wallet. Once you have your Recovery Phrase written down and stored safely, all your funds can be restored if you lose access to your wallet.
If you ever need to restore access to your wallet, click here to use your Recovery Phrase.
Please note: Your Recovery Phrase doesn’t apply to any imported addresses. If you have funds stored under Imported Addresses that you want to make sure you can also recover, use the Transfer All option to the right of Imported Addresses to move them to an account in your wallet.