Hi, I have problem with incremental copy of files from source to destination.
I would like to copy different sources to different destinations. I made a backup script which look like that:

curd=$(date +%w)
day=$(date +%A)

mkdir -p /home/backup/DATA/$day

case $curd in
1|2|3|4|5)
rsync -rP --ignore-errors --force /home/backup/Data-Finance /home/backup/DATA/$day;
rsync -rP --ignore-errors --force /home/backup/data /home/backup/DATA/$day;
rsync -rP --ignore-errors --force /home/backup/data-tb /home/backup/DATA/$day;;
6)
rsync -rWP --delete --ignore-errors --force /home/backup/Data-Finance /home/backup/DATA/$day;
rsync -rWP --delete --ignore-errors --force /home/backup/data /home/backup/DATA/$day;
rsync -rWP --delete --ignore-errors --force /home/backup/data-tb /home/backup/DATA/$day;;
*) exit

The problem is that I have source almost 400 GB.I want to back up only those files which was modify only on the current day without those are older.

When rsync start for first time it starts coping all files from src to dest.
Is there any option which to resolve this?

Thanks in advance!