Soldato
I think it's unlikely (whilst not scientific) that halving my food intake would leave me with a calorie surplus. I'm not changing what I eat (apart from cutting out entirely snack food - so actually less than 1/2 of previous intake).
Otherwise I'd have been eating over twice as many calories as needed, and surely I'd be a whale by now if that was true?
e: I should also say this is not my first rodeo. I've done ADF before and lost 1 stone in the first month. The 2nd month I was sloppy and ate between meals, sabotaging myself.
But I'm going to assume that I must have been running a calorie deficit in the first month of fasting. I didn't count calories either.
I haven't counted calories either in 9 weeks. Just try and aim for macros.