Dear Arielle,
Just posting your height and weight is not enough to tell us if you should be on a Keto diet or any other diet, for that matter. From your posted height and weight, I do not think you are overweight at all.
What is your percentage body fat?
A very fit and trim woman should be around 18-22 % body fat and many more average around 25-30% body fat.
If you are feeling fatigued with this diet, I think that your body is telling you something.
I am a proponent of healthy, sustainable plant based diets. Keto is none of these. Yes, you can lose body fat on a Keto diet, but as soon as you go back to eating as you previously did, you will gain all the weight back and maybe some more as well.
Getting into peak form is so individual that nobody can make any broad statement that correctly applies to everyone. Peak form is a type of thing where we just try various weights and see which weight works best for us.
With only 3 years of HRT, your body is still feminizing. Most of the big changes are already and from now on you may experience some more subtle changes, especially to your face.