Convert rancher provisioned cluster to custom cluster?

I would like to know if it is possible to convert one Racher provisioned cluster in VMware (Rancher manages nodes creation and deletion in addition to the RKE2 kubernetes) to a custom cluster (Rancher only managed RKE2 kubernetes of the manually provisioned nodes). Because I want Rancher to stop managing the creation and deletion of my nodes. Is that possible?

I use Longhorn and in a chaotic update of the cluster, which involed the deletion and creation of new nodes, I lost the Longhorn volumes. (Probably it was my fault)

Regards,