I ordered Ovestin from Superdrug Online Pharmacy as a back-up when I didn't know what my surgery was going to let me have. I learned all about the products from this forum and knew what to ask for, I don't remember being asked my age just what I needed the treatment for. Knowing the words Vaginal Atrophy was enough for me to get the Ovestin.
I am an old bird compared to you, Talli, and I am wondering if that's why your surgery is reluctant to let you use the treatment on a daily basis, not that it matters at all, it's such a safe treatment.
Do let us know how you get on, it will help others reading your post in the future.