After you've manage to back it up, you might have still trouble finding and terminating everything.
While I don't have an answer to your question, you might find this tool handy for cleanups - https://github.com/rebuy-de/aws-nuke
Ask HN: Tool to export AWS configuration entirely?
11–12 of 12 posts
Re: Ask HN: Tool to export AWS configuration entirely?
#12I also find Terraformer.
It can dump the configuration to text files and later could be consumed by terraform.