Hi Mandapanda,
Welcome to Menopause Matters; I've only been on HRT 16 days myself, I'm post meno, and although I can't give you advice regarding your question there are some lovely very experienced ladies on here who will I'm sure be able to answer your question.
I too, have severe anxiety and insomnia, which seems to be getting slowly better.
Just to encourage you, that there is some really really good and helpful advice on here.
All the very best
xx