Is it safe to READ data during a raid migration?

I am currently migrating from a 2 drive RAID 1 setup to a 3 drive RAID 5 setup. It looks like this process will take another couple days, so i am wondering if it is still safe for me to access and read my data while the migration is taking place. Specifically, i am using the storage volume as a plex library, so I would like to ensure that it is safe to access my media.

Thank you