I am commenting without knowing the specifics of your application, so apologies if it doesn't apply. You should look into using separate AWS keys for your DB b

I am commenting without knowing the specifics of your application, so apologies if it doesn't apply. You should look into using separate AWS keys for your DB backups and whatever it is your app uses those credentials for. This not only prevents any future availability issues because of key revocation, it also allows you to set fine grained permissions on your access keys limited just to what they're being used for.