In my own experience,
I used to weigh 170 kg, a bowl of rice and some vegetables every day.
2000 meters every morning, 30 sit-ups in the afternoon, no staple food at night, eat a la carte and drink some porridge.
As long as you feel full,
Then go out for a walk after dinner 1 hour, stroll 1 hour.
2 months to 120.
Pay and return are always in direct proportion.