Hi, this doesn't sound good to me TBH.
I don't know why this is high in time, maybe try to look at some modules/examples to create resources via terraform, ie.:
https://github.com/databricks/terraform-databricks-examples
https://github.com/databricks/terraform-databricks-sra

I have done this few times from scratch, you setup re-usable modules then you are ready to use them basically.

When to use DABs vs Terraform: https://medium.com/@alexott_en/terraform-vs-databricks-asset-bundles-6256aa70e387

Maybe I didn't get your problem, but this shouldn't be time consuming TBH.