Buy Estriol online if you can, it will supplement the measly dose of Vagifem you are allowed, smear some on the outside.
Also are you using a moisturiser, the oestrogen treatments are of a very dry consistency, the moisturiser will help with lubrication.
I am very, very much older than you. My regime is Vagifem daily, Estriol smeared on the outside twice a day and I wouldn't be without a moisturiser for lubrication. I am not on systemic HRT and as much as these so called experts say, I am extremely healthy for my age with my heart and brain very firmly intact, probably down to my life long healthy lifestyle, which is very important as we age.