AWS s3 last 6 month images download

i have many images stored in AWS s3.

i just want to download the last 6 month images only anyhow. using shell script or aws cli.

aws s3api list-objects --bucket "mybucket" --prefix "some/prefix" --query "Contents[?LastModified>=2018-08-22].{Key: Key}"
i can list all the object 6 month using this command now how i can i download.

Thanks in advance..!