Terraform when don't want to use depends_on in a data source

Terraform
1

Hello , I use terraform to create projects in gcp with terraform. There is a requirement to query a data source once project and services are enabled , but i don’t want to use depend_on in data source as it triggers changes in every subsequent runs.

Example code

    resource "google_project" "project" {
  for_each = local.project_attr
  name            = each.key
  project_id      = each.key
  billing_account = each.value.billing_account
  folder_id       = each.value.folder_id

}

// Enable services for a project
resource "google_project_service" "service" {
  for_each = local.project_attr
  service                    = each.value.services_enable
  project                    = google_project.project[each.value.project].project_id
  disable_dependent_services = true
  disable_on_destroy         = true
}

data "google_storage_project_service_account" "gcs_account" {
  for_each = local.project_attr
  project = google_project.project[each.value.project].project_id
  
}

My Tfvars looks like

project_attributes = {
  "ritesh21" = {
    "services_enable"  = "storage.googleapis.com"
    "folder_id"        = "",
    "billing_account"  = ""
  }

}

After doing terraform apply , creation of project goes fine , now when i update my tfvars adding one more project to be created.

project_attributes = {
“ritesh22” = {
“services_enable” = “storage.googleapis.com”
“folder_id” = “xxxx”,
“billing_account” = “xxx”
},
“ritesh23” = {
“services_enable” = “storage.googleapis.com”
“folder_id” = “xxxx”,
“billing_account” = “xxxx”
}
}

And do terraform apply it fails

Error: Error when reading or editing GCS service account not found: googleapi: Error 400: Unknown project id: 'pp-p-ritesh23', invalid

  on main.tf line 55, in data "google_storage_project_service_account" "gcs_account":
  55: data "google_storage_project_service_account" "gcs_account" {

Normally datasource attribute project = google_project.project[each.value.project].project_id should be able to create the dependency but it’s failing on project doesn’t exist.

I can solve this by adding depends_on in data source

    data "google_storage_project_service_account" "gcs_account" {
  for_each = local.project_attr
  project = google_project.project[each.value.project].project_id
  depends_on = [google_project.project, google_project_service.service]
}

But doing this makes all subsequents run , detect a change . I know that’s the reason using depends_on data sources in not recommened , do we have any way we can achieve it.