Sub-tasks into Power BI

I’ve connected to ASANA via the Power BI connector and have all the data I need apart from the sub-task data. It looks like you’re not able to access this data via the connector and it seems to be a feature that other users have requested with the link below.

This is data we really need. Is there a way to access this data using a different API which I can then join in Power BI?

Thanks in advance