Power Query M - Filtering to Max Date per Group

Very much a novice here so apologies if this query seems a bit basic.

I have a table where one of the columns holds nested tables:

The nested tables hold a large number of columns and rows which will be manipulated after they're expanded but before that, I need to filter each table to contain only the records that match the latest [Source.DateCreated]. This date would be different for each [Financial Year].

Example of Nested Table contents:

My desired result for the above example:

I know that I can filter by the latest date for a table but I'm clueless on how to do this for a nested table.

Does anyone know how I would go about doing this?