>>76352182
>30lbs * 3600 = 108000 calories / 54 days = 2000 calorie daily deficit
>Your TDEE is probably something like 1800 calories
>You need to not only eat nothing you need to do an additional 200 calories of cardio on top of eating absolutely nothing
Well its not happening, even if you straight up fast for the next 54 days its still unrealistic. But if your intent is to still lose as much fat as possible follow pic related. That will preserve your muscle and burn as much fat as possible. Its difficult to stick to but its optimal fat loss.

If you want more detail on the diet in pic related read:
https://rapidfatlosshandbook.com/wp-content/uploads/2014/07/RapidFatLossEBook.pdf

>>76327108
>How unhealthy is water fasting actually?
Fine for short durations (72h every other week or so). Just make sure you get enough electrolytes. You'll lose LBM alongside the fat which is why its typically not recommended or desirable, as LBM is 10x as hard to gain as fat is to lose. Try PSMF instead, you'll lose fat at a similar rate, but your LBM losses will be minimal, pic related.

>Does the body not start some calorie conservation mode when you starve it?
No, Read: https://physiqonomics.com/eating-too-much/#Starvation_Mode_Metabolic_Damage_and_Slow_Metabolisms_OH_MY

>>76286766
Try PSMF instead of straight fasting. Chances of losing muscle mass are greatly reduced.
Basically eat a skinless chicken breast or some protein powder instead of nothing at all.

>>76255713
>fasting
Do this instead.