Add where clause to relations table in laravel

I have a question. This query gets me the needed data and that includes the related table delivery

$RS = $this->instance->user()->with(['driver.trailer', 'driver.truck', 'driver.delivery']);

I researched this topic, and I think part below should do the trick, but I don't know how to combine the two together.

 //add WHERE clause to driver.delivery:
->whereBetween('created_at', [
 Carbon\Carbon::parse('last monday')->startOfDay(),
 Carbon\Carbon::parse('next sunday')->endOfDay(),])
->get();

I am new to Laravel (doing it for about 10 days now) and this concept is very new to me. (I have no issues writing a standard query)

via Chebli Mohamed