Hi,

I dont believe CDF is enabled by default, please see:
"Change data feed is not enabled by default..." in this doc: https://docs.databricks.com/en/delta/delta-change-data-feed.html.

If it was mistakenly enabled at a table-level it could be disabled with a subsequent `alter table`. 

If these details don't help, please provide some additional details about your situation.

Thank you.