She is still quite small and recovering I do not know that I would cut back her food yet because of it.
How much are you feeding now and how often?
I would add in some more branches for her. Just because her mobility is going to be impacted due to her MBD.
I would like to just double check the UVB. Which T5 bulb strength do you have and what is the distance from the bottom of the fixture to the branches right below the fixture?
Here is my blog on trust building.
https://www.chameleonforums.com/blogs/building-trust-with-your-chameleon.2396/
You might not need to sit when doing this. Especially if you are shorter like I am. As long as your below her she will feel safe. I did all my trust building through hand feeding. I also used the same green colored cup to pour in their feeders. They learned that when they saw the cup I was adding food and would always come to the front for me.