So a 15-20 day supply in normal times. Not exactly a glut.
There is very little trunk money and subventing of rates in Ford trucks (historically and right now). If they aren’t selling well enough, that will change.
Ford is also a brand notorious for ending lease support early and flipping the incentives to purchase-only. And they play the holiday game. Maybe Labor Day -maybe?
A good friend just traded their F150 for an F450 on Monday and tells me the dealer was busy and people were buying cars/trucks.
Your crystal ball is as good as mine. 
