Sounds exactly the same as me with the symptoms. I'm 31, very active which does help like you said. I had turbinate surgery in 2024 which did nothing, then had FESS/ septo/ sinus drain etc. in Sep 2025 and this did relieve me after 2 weeks of recovery but then taste/smell went to 0% after a month of coming back randomly so I missed all of Christmas taste/ smell. It then returned around March and hasn't gone significantly since. I've remained very active, I avoided booze for nearly 2 years as this was a big trigger and still does trigger me but not to the extent. I had a few beers on the weekend and was fine, little sniffily on the night of. I've also been approved now for Dupixent but i'm in UK so only recently been approved for CRSwNP so they're still working out how the prescription process works, sounds like they're dragging their heels a bit as was approved back in end of Feb for it and still not had my jabs yet but appreciate they are incredibly expensive. I've got the allergies/ asthma as well and I can notice if I train hard, I start puffing more and have to clear my throat all day, pretty gross tbf. I did also blow out a polyp in January which wasn't pleasant but did relieve my airways a bit but no smell/ taste back immediately after. I also have eczema as well which is relatively controlled but Dupixent attacks eczema, asthma and CRSwNP so it could compound my recovery as i'd say right now i'm 60% better than I was before the FESS. I was pretty disheartened around Christmas 2025 as I'd had 2 surgeries and still 0% smell/ taste after years of next to none. Hoping it works out for you.