It's way too early and you are far too symptomatic to stop taking it daily IMO.
Heck, I have ZERO symptoms and I take Vagifem DAILY for 3 weeks before a smear test

just to make it a bit more comfortable!! I'm also on high doses of systemic HRT as well.
As someone else has mentioned, you might want to look on Amazon for the book called 'Me and My Menopausal Vagina: Living with Vaginal Atrophy' by Jane Lewis. You will find that what you're going through isn't unusual, although not everyone gets it this bad.
As for the leaflets, you are really not hearing the fact that they should have been updated and haven't been. I'm afriad there is a lot of history here, with the WHI study, which you don't know about. You are either going to need to decide to trust the medics or the people who have learnt it the hard way on forums like this. But if you want to go and do some reading, go to the Balance Menopause website and read everything there.