Query to get all blocks related to a meeting, with creation date > last meeting date

I’m using a property for future meeting notes, by setting ‘futuremeeting’ property to [[John]] for example.
Then, when meeting [[John]], I’m creating a [[John]] [[Meeting]] block for our meeting, via a template, which also runs a query for all blocks with futuremeeting = [[John]]

It works great, but the problem is I’m also getting blocks from the past obviously.
If I met with John at Jan 10 and Jan 20, I don’t want to see the related blocks from Jan 8 for example

How can I create such a query?