You can eat it after 3 months, using the gradual substitution method. First, instead of staple food, you can eat vegetables normally and control the total calories. The goal at this time is not to lose weight, but to control and reduce the speed of gaining weight.
After weaning, the mother's hormone level will be unstable, and there will also be factors of weight instability in physiology. Therefore, it is best to stabilize your weight after weaning and eat it after the holiday. The effect will be more stable.
Just sitting in the second month, the body function is unstable, just like the maternal. I'd better come back after my period next month.