elainewin, I'm struggling to understand how your GP thinks that coming off HRT completely will help with low mood, night sweats and sleep problems. It is ridiculous to suggest that you would have the same problems that you have now if you took the Oestrogel with Utrogestan, both of which are known to have a far greater success rate than your current HRT which contains norethisterone and is notorious for causing all the side effects that you have. I'm surprised that your doctor does not know this.
How do you feel about going to seeing a private specialist? I would recommend Professor John Studd, he is in London charges about £300 for a consultation - I know it is a lot of money but it would be worth it and he does take credit cards if that helps. I think he would be able to give you some very good advice and would probably prescribe the Oestrogel and the Utrogestan without any hesitation.
You have done your best and tried to get treatment from your GP but it has not worked out so perhaps it's time to try something else.