Look into cordless, blackout shades. If you're short, get a little stool to slip behind the corner chair.

You could put canopies on the outside above the sightline? You just need a shadow, correct? The canopies could be retractable via smartphone.

Thank you. @decoenthusiaste ... do you think a pole would work to raise and lower the shade? And would you suggest an inside mount or outside mount? @tangerinedoor ... where do I find those kind of canopies that work with your phone? Do you know if they have remote control shades that work with a phone? @ Patricia Colwell Consulting ... What do you mean by "snap into place." So, they would always be on the window? They are not the only windows in the room.

Thanks for your input!!

I think to prevent light leakage around the edges and to make them easier to raise and lower, you'd do better with outside mounted ones. Ask the dealer about some kind of tool to grasp them for raising an lowering them. Maybe a DIY friend could come up with one for you if there is no such tool available..

These windows must face west to get setting sun & problem worse in summer when sun higher? I might try glare cutting window film before any expensive & permanent blinds. Search shows lots out there & inexpensive enough to give it a whirl & maybe even remove for winter & replace each summer if you tried the static stick type.