angelrobin, I have never tried Femoston but if you feel like that after 2 months then I would say yes, that dose is probably too low for you and it would be better to go back to the higher dose.
I was on Angeliq for a while which is similar to Femoston with 1mg oestrogen and it didn't do anything for me at all but unfortunately there isn't a 2mg oestrogen dose of Angeliq so I ended up topping up with a 50mcg oestrogen patch.
Can you easily go back to Femoston 2/10?