How did you wean your baby from breastfeeding?

How did you wean your baby from breastfeeding? What medications were they taking? They say there are medications that need to be taken during weaning from breastfeeding, recommend a good one. I went back to work and as sad as it may seem, I have to abruptly wean him, nobody will stay with the child, mom is leaving for another city and wants to take the baby with her for 5 days. In principle, he doesn't even look for me, she can safely put him to sleep without breastfeeding. But what should I do? I'm afraid my breasts will hurt, the baby eats regular food well.