[Help needed] Downscale HA proxy on Kubernetes #24698

I installed an HA vault cluster in K8S (helm chart) to evaluate it.
Pretty cool, happy, moved to PROD.
Now I would like to scale down this cluster (in test) from 3 nodes to -say- 1, and maybe up to 3 again etc etc; the reason is both “playing with it”, but also and more importantly cost optimization.

Any way to achieve this without loosing the cluster configuration (login and unseal keys basically)?