I’m 5 foot and currently 68KG. I plan on eating 1200-1500 calories with a focus on protein and weight lift 4x a week.
Is it possible? Maybe. Is that sustainable? No.
If you do manage to lose that much in that time, but then change your eating habits to something else after you hit your goal, will weight come right back? Yes.
I’ve been eating in a calorie deficit for a long long time now, and I’ve been consistently dropping 10 pounds a month for going on 15 months. It’s certainly possible especially since the beginning is when you will lose the most