Paula and Norma,
I am curious. You both mention excessive heat from the sun. I realize the cab area will always be an issue, but Paula, you covered the RV windows with home-made shields. Do you have single pane or duel pane thermal RV windows? Our thermal panes keep out the heat real well, though I have yet to be in tripple digit heat.
About the windshield glass. I found pop-open "Made To Fit The Ford Van" windshield shades, sold as a pair. I got them from Walmart a couple years ago, but I am sure they can be purchased at Advance Auto Parts, Murpheys Auto, Auto Zone, Pep Boys, etc. They fit perfectly, but do leave the side windows completely exposed. They are a quick simple solution for people on the move like us. Easy in & out, and they store easily in the backrest pocket of either front seat. They are extremely effective in keeping out the heat, and offer windshiled privacy, but not the door glass. For that we partially open the privacy curtians for a quick fix.