Absolutely no need to stop HRT at 60 - this is old news! Provided you are otherwise healthy and there is no medical reason to stop you can carry on as long as you want to. I definitely would not want to be on a lower dose than 50 mcg ( I am mid 60's and I have always been on this dose officially though for the last few months increased by adding a wuarter of a patch because I take teststerone too). Please do not reduce the dose if it is making you feel unwell and go back to your doc saying you do not wish to reduce. As long as you are following a healthy lifestyle and reduce your cancer risks through increased exercise, maintaining healthy BMI, good diet (low sugar/processed foods, not too much fat, lots of fresh foods), reduce alcohol, no smoking - then you will be doing the best you can for yourself for futre years, and the 50 mcg oestrogen dose will continue to help protect your bones and heart.
Hurdity x