i dont want to move files which are being uploaded 5 to 10 min ago

in /abc/jrd/
users are continuously uploading files memo*.txt
i have created a memo.sh file in that i have written
cd /abc/jrd/
mv memo*.txt /scripts/memo

while files are being moved to this /scripts/memo users who are uploading new file are not getting fully copied i this path i want that there should be delay for 5 to 10 min of current file transfer and rest file should be move to /scripts/memo