Back in the day when I used to make my own (washable fabric) curtains and we didn’t have central heating, I too had Summer and Winter curtains and they used to be washed each time I took them down, just like my Mum did.
All our curtains are now floor to ceiling and Dry Clean only , where they charge by the metre, as we bought all of the curtains in the sales, it would cost more to dry clean them than buy new.
My new approach is to open the and close them and not look at them between times, maybe they need cleaning? Who knows.
When they become full of holes and drop off the curtain pole I might be inclined to sort them out , until then..........anyway until we sort it, the carpet is so awful it will take everyone’s mind off of the curtains and don’t get me started on the sofa!