How to track cost for Azure Databricks Lakehouse monitoring per table from system tables

Lakehouse Monitoring or Data Profiling (https://learn.microsoft.com/en-us/azure/databricks/data-quality-monitoring/data-profiling/) is applied on Unity Catalog tables/views and materialized views. I am trying to figure out how to track cost for Azure Databricks Lakehouse monitoring per table from system tables. I have referenced Azure Databricks documentation https://learn.microsoft.com/en-us/azure/databricks/data-quality-monitoring/data-profiling/expense and found out the way to get cost for whole Data Profiling feature.

SELECT usage_date, sum(usage_quantity) as dbus
FROM system.billing.usage
WHERE
  usage_date >= DATE_SUB(current_date(), 30) AND
  sku_name like "%JOBS_SERVERLESS%" AND
  custom_tags["LakehouseMonitoring"] = "true"
GROUP BY usage_date
ORDER BY usage_date DESC

It is using the ´system.billing.usage´ table. But I could not find any way to associate this cost for table. I went through the detailed documentation about ´system.billing.usage´ table and figured out that ´usage_metadata´ field should contain the table information like ´uc_table_name´, ´uc_table_schema´ and ´uc_table_catalog´.

I created some sample monitoring on some of the UC tables and scheduled to run it over a period time. But when I checked the ´system.billing.usage´ tables later for ´billing_origin_product = 'LAKEHOUSE_MONITORING'´, all the fields of usage_metadata fields are null. So I have no possibility to find which table this usage was occur.

It would be really helpful if someone can guide me in the right direction.