Hi,
My name is Mike Syroezhko, i'm a devops engineer specializing on AWS solutions.
If your instance is EBS backed, then the best (and recommended by AWS itself) way would be to use EBS snapshots. I can automate this process so that you would have the backups for last X days (usually X varies from 10 to 30, depending on customer's needs).
I can start working on this project right away, the work will take a few hours, so the backups automation will be fully functioning today. I do not require any upfront payments, the full payment will need to be done after you get satisfied with my work.
-- Mike