Well ... would you know it, I instinctively picked on a fairly similar approach. When I start feeling weak, I back off a bit, increase calories somewhat, gain some strength and slowly taper down the calories again.
Similarly with the cardio - started off with deficit diet and 2-3 weeks later added in cardio to bump up the weight loss.
Even the fat intake part rings true. One of my favorite meals on a cut is protein powder mixed with heavy whipping cream / large whole egg omelets (6 eggs and more), etc - i.e. plenty of fat sources.