In that case, is there a way for you to move an environment from one cluster to another one?
Any suggestion on how to avoid downtime while migrating from one cluster to another one?
After that, you will need to replicate the data on this new environment if you have any in non managed service.
And to promote the new environment as the prod one, switch the DNS to this new one. This step may cause a few minutes of downtime/split for users.
But I don’t have any better solution on my end.