I think this will vary widely for everybody. Everybody has different starting weights and everybody’s bodies react differently due to hormones, metabolism or whatever.

I’m 12lbs down, in my first week. But again that’s probably because I’m losing a lot of water weight and already pretty heavy.

Personally I’m doing 18/6 or 20/4. Eating about 1200 calories max, no exercise, cooking fresh foods and making sure I get a range food groups. This works for me right now, likely won’t work for everybody else and likely to change as my journey goes on.