When I was on oestrogen tablets, they upped my dose from 1 to 2mg and I climbed the walls. I then split the dose into 2 x 1mg with about 6 hours in between doses and that helped.
I'm still not 100% convinced that my autonomic nervous system dysfunction (high bp, slow pulse, weird sensory symptoms) isn't linked to HRT, although the meno clinic consultant says he's never seen it.
Before HRT though I was very ill, so it's a tricky balance. Can you not go down to 1mg again if that felt better?