In one room where the bulk of my plants will go for winter, which isn't used for anything else but to store stuff, I have prepared the room for the most possible light exposure by "wallpapering" the bright half of the room where the plants will be with foil. Also lined the shelf and table surfaces where plants will sit. Cost = About $7 for 2 rolls of cheap, thin foil & roll of tape.
There's 1 S and 1 W window. The rays are really bouncing around in there, it's really cool! Moving the plants in will put a damper on it somewhat, but it should still be noticeably brighter, and hopefully less leaning toward windows. I've done this in my little greenhouse before and it made a HUGE difference.
A smaller approach could be to cover a C-shaped piece of cardboard with foil to put around the back side of plants near a window. That would block a lot of light coming into the room, but if you're away all day anyway, might not make much difference, and might eliminate the need to close the blinds, depending on the height of it & your windows.
