How to Restrict Access to Specific Dataflows in Power BI

In my Power BI workspace, I have dataflows that source data from Excel files stored in SharePoint and perform data transformations. These dataflows feed a semantic model, which is used to create various reports.

I need to implement granular access control for different user groups. I understand that Row Level Security (RLS) can be used to restrict access within the semantic model. However, I'm struggling with securing the dataflows themselves.

Currently, granting access to one dataflow implicitly grants access to all dataflows. I haven't found any options within Power BI services to restrict access to specific dataflows.

Is there a recommended approach to address this challenge? I believe there must be a solution to control access at the dataflow level.