Thanks for your reply. After studying the documentation further I think the safest option
will to set the rhel release to 8.5 while we are running 4.4
subscription-manager release --set=8.5
subscription-manager release --show
Then update the cluster to 4.4.10. After which we set the release to rhel 8.6 and update
to ovit 4.5 following the instruction in the link
https://www.ovirt.org/download/install_on_rhel.html
What are people's thoughts on this?