It’s not, but only when your doc is one of those “your numbers are in range type”. The fat hasn’t changed, only your hormonal profile, which can be put back if your doc is going for getting you optimal and not just trying to check a box on a “reference range”
First thing would be are you tracking what you eat, if you’re going blind, it’s trying to find your way out of a labyrinth blindfolded, guaranteed bad ending there.
Also don’t forget about your Thyroid, if you’re like many that thing is probably underperforming, and long term Ketosis has many of us with worse off values, one of the downsides, many excuses are made on that one, but what never changes is better T3 levels means you burn more, there’s no disputing that.
So if your HRT doc isn’t the type that’s about optimzing, change them. If it’s a mainstream doc, or an Endo, then 95% of the time you’ve got a box checker. Also, the other huge one they leave out with women is Testosterone, have of them don’t even check it, and that’s a huge one as well when it comes to fat burn, my wife left her endo, came to my TRT clinic, they took over everything and also put her on Testosterone and night and day difference! More women are on Testosterone now than ever!
To pile on to the Thyroid side, if your doc (does) check it, yet only checks TSH, huge fail on their part as that tells them nothing usable, gotta check all of it!
You 100% can!