Hi, Amoré,
I'm finding a few things that will help...
I'm still in the Prep stages, and 40 years, with a fair amount of gym time. This is what's working for me, pre-hormones.
1. Foam roller, as much as you can, focusing on where you have knots, or where you need to reduce.
2. Fasted cardio, which will start to burn muscle. Morning is best time, get huffing and puffing.
3. limited protein. I'd suggest looking at the Fat Fast diet, and then tweaking it to reduce protein.
A. Fat Fast is already low carb, < 20 g/day of Carbs
B. Reducing the protein and replacing with fat will get you to a muscle-wasting state, I.E. Catabolism.
C. Should still be able to BUILD the girl muscles we want (mostly gluteals)
4. Jogging would be a preferred method of moderate cardio. #2 should be HARD cardio, but this is more off days / active recovery, and it means jog for an hour or more.... T-nation listed jogging as the most effective form of non-surgical gender reassignment, let's use that for our benefit. ;-)
After that, it's just time and dedication.
-Dianna