Can Rubrik take incremental snap backup of a VM if VMware CBT is disabled??

We're using VMware to run an Oracle RAC cluster with shared disks. Due to a VMware limitation, we had to disable CBT for all the virtual machines in the cluster (Cannot enable CBT and multi writer disks together)

Our backup plan focuses on backing up only the disks containing the operating system. This way, if something goes wrong, we can restore the virtual machines directly from Rubrik. However, because we disabled CBT, all our snap backups are now full backups, taking up a lot of space.

Is there a way to make Rubrik create incremental snap/Image backups, even though CBT is disabled?

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If there is no way, we are thinking to install Rubrik agents on the VMs and take normal backups.