hi qiqi
I understand from another BF mum that it is recommended that if you are weaning, the entire weaning should not take more than a month.
I have also successfully weaned my girl in about a month without drugs.
What I did was to start by gradually increase the number of FM feeds.
this was my usual feed cycle (I was a FTWM):
7am : Breastfeeding
12pm: Lunch (solids)
3pm / 4pm: FM
6pm: Breastfeeding
10pm: Breastfeeding
I started by removing the evening feed, then removing the night feed, then the morning feed, by decreasing the length of time spent on the breast.
The first time after you have removed a certain feed, you would still feel engorged but it would be ok by the same time on the second day.
If you have any questions, just pm me.