I test it with : Terraform v1.1.2 provider helm v2.5.1 provider hashicorp/kubernetes v2.11.0

• Change adminPassword in values.yaml
• for auto load prometheus:

prometheus svc name: prometheus-k8s
prometheus namespace: monitoring

or change address datasources.datasources.url in values.yaml

• Run Terraform commands

terraform init
terraform plan
terraform apply

if you want to recreate a machine without destroy and recreate whole the infrastracture, you can go for the taint command

terraform taint [options] <address>

and new Recommand for Terraform v0.15.2 and later is -replace flag

terraform apply -replace="aws_instance.example[0]"