I was hoping for some feedback from anyone who may have been in my position (I was given major corrections - see my earlier post for extensive ranting!)

One of the recommendations in my viva report was to basically combine my two major theories into one theory (Foucault + Feminism = Foucauldian Feminism). I am writing a new chapter specifically on this but it also says in my report to use this new theory "more explicitly throughout the thesis". I am finding this quite difficult. They haven't asked me to take anything out or change anything that I'd already written. I'm therefore slotting in my new theory by adding to my current chapters - this ranges from adding a few pages and/or paragraphs to each chapter where I (somewhat awkwardly) bring in this new theory. It all seems a bit of a jumble to me but I appreciate that, as a PhD candidate, I have to master this.

What I wanted to ask was has anyone been given a similar challenge and, if so, did you go about it the same way as me?! Any feedback would be greatly appreciated, thank you! :)

That's how I would approach it so i think you are on the right track.