So you’re not going to eat any protein the 4 days before your fast? That sounds like a terrible idea. A carb heavy diet before fasting sounds like you’re just trying to make it harder with lots of hunger during your fast. I’m not saying you need to be keto to fast, but it sure makes it easier (at least for me it does).
If you haven’t fasted before, I strongly suggest you ease in to it. Do a few 16 hour fasts to start with. Once you feel you have a handle on that, add hours to that 1-2 hours at a time.
If you want to increase the weight loss, go Lean Protein and Low carb vegetables. Lean Protein of your choice, and Low carb vegetables (Cauliflower, Broccoli, Zuchinni, Summer Squash, mushrooms), can add a few raw nuts like walnuts if you want. Go Organic or Grass fed proteins if you can. This will send you into Ketosis quicker then consuming the fruits. If you want a Low Carb fruit, try Avacado, it has good fats. Avoiding Fructose from fruits and carbs will push you into ketosis quicker,and speed up weight loss. To give yourself a boost, on your feeding days, work out while fasted, then within 1 hour after, consume your meal/protein
Since you’re a woman I’m going to recommend my favorite female focused fasting podcast - The Fasting method (I linked Ep 5 one of my faves). I do not at all recommend the schedule you laid out. You need to train that fasting muscle before jumping into 72s. I started 18/6 -> 20/4 -> OMAD and now do 3x42 hour fasts a week with incredible results. Even as an experienced faster the 42 hour fasts I’m doing down and what helped me lose all my weight was very challenging and it took me a long time to work up to it.