I'm just throwing this out there, but one possibility is that this could be Empty Nose Syndrome (ENS) due to turbinate removal. As well as dryness, is their crusting, dyspnea and paradoxical nasal obstruction? It's kind of rare but it does appear to occur. Actually just realised, you did mention the rawness and breathing difficulties in your reply. Hopefully with any luck, your appointment on Monday may help to pinpoint the cause and so engage with appropriate measures to manage this.
Trying to pinpoint the exact cause of an issue can be a bit tricky at times as it's not always a clear cut case. And of course there are occasions where the treating medic may not be looking in the right direction. Lol, this reminds me of a case years ago where one of my cousins was experiencing nasal issues. She was mentioning that for months her doctor was treating her but to no avail with nasal steroids and antihistamines. I told her to she's missing a trick as she works in a hospital. Advised her to show her nose to one of the ENT guys and get checked for polyps. Hit the jackpot as that's what she had and so got treated accordingly.
But anyways, best of luck with Monday's appointment. Let us know how you get on?