My collegue went from 115kg to 85kg some time ago. I know it's a different kind of game. Took a year for him. He was younger, in his late 20s, so running was still an option for him. I am In my late 30s, and traumas accumulated so i had to accept that calorie counting was the only remaining option.

Also, I'd suggest still working from a high-protein approach. You get to keep you muscle, especially if you do some reasonable amount of training.