Rufus, I'm 60 this year, and the thought of EVER stopping HRT fills me with dread.
Everyone is different though.
For me I want to continue to feel as well as I do (I know how I feel with no HRT) and also I want to reap the other benefits that HRT provides, i.e. some protection against cardio-vascular events, brittle bones and possibly dementia too.
I'll take it as long as I can get my hands on it.
Perhaps try it, but give it a fair crack of the whip, and then decide?