It looks to be receding, I can see some minaturised hairs, but it's still thick. Like a solid NW1.5
Also about sides, I'm 18 and on finasteride, and can't grow beard hair lol, you're 26 and probably fully developed, finasteride can't f*** you up like it could do to me, it seems to be very well tolerated in your age group, I'd say the people who get the most fucked up by sides are mostly between 18-21 because they're not fully developed, so taking it messes up there prostate. So I'd say, try not to worry about sides, because nocebo is a really powerful thing, but if you feel really uncomfortable with taking finasteride rn, you are still safe to drop it, and watch it for 6 months to see if it recedes anymore.
But I'd say stay on it, it's helping me with my mental health knowing that I'm doing what I can for my hair, and it has stopped me worrying so much, but my hair loss is more agresssive than yours.