If you show a pic with your things in the room you'll probably get more help.

From what you descibe, it sounds like cellular shades might be your best option, though it's hard to know without seeing more.

Bi-fold shutters should cover your bases. Wide open or slats angled, closed at night. I love properly installed shutters. You can dress them up, paint them fun colors. Great investment, IMO. Suggest you choose a composite, not wood.

Here’s the office with my furniture. You can see how the long curtains bunch up behind the dog bed and file cabinet, but I don’t have much room to bring the furniture out away from the wall. Desk is the only only place I have enough light for plants at home, so I need low-profile treatments.

What else is in the room? And your pup can have a smaller bed. He doesn’t need the poofy sides.

It’s an odd camera zoom—the bed isn’t that huge but the pup loves her bolsters so the bed is staying. 😂 There are 3 open (and very full) bookshelves against the right wall, a winged armchair with footstool, a side table for the armchair, and a small set of drawers that hasn’t found a home yet. Waaaay more stuff than I want in a sparse office! Another reason to keep the window treatments simple.

At a minimum, pull your desk away from the window a few inches so you can open and close the curtains. You say the room is small, but there seems to be enough space to bring it back a couple of inches.

How about a bottom-up window blind, no curtains? This would allow you to control the light and glare at eye level while giving you privacy and plenty of lights for plants.

OK, the pup needs to keep her bed. 😁. But maybe you can chuck the bookcases. This is YOUR office. Do you regularly use everything on the bookcases? If you don’t use the stuff, I bet no one else does either. Box it up and claim the space for yourself, and make it a fabulous space.

I love how helpful people are on this forum. 💕 I think I’ll go with a simple inside mount roller shade. I’m an academic so the bookshelves are full of both necessary reference volumes and inspiration, and I love them in the room. Same with my 10-month old growing Labrador Retriever and her bed. But the file cabinet can probably find a better home that doesn’t clutter my workspace—I hadn’t thought to not have it in there.

Thanks for all the great advice!

Not a window suggestion but looking at your photo it’s the “legginess “ of everything that makes it look a little crowded and chaotic. If the leaning bookshelves were solid like the filing cabinet it would help to calm the room a bit

Have you thought about putting those drapes on a traverse rod and opening them with a wand?

I agree to pull your desk forward a little bit. You might want to play with the furniture layout to leave the window free and then you could place the dog bed in front of it. I'm not sure how big your bookcases are, but it might look nice to flank the window with two of the and join them with a simple shelf across so you could have lots of room for plants. You could put a simple blind behind. Perhaps the desk or a benchwith storage could fit inbetween.